Editing Cave unit

{{game icons|p2=y}}

[[Cave]]s in ''[[Pikmin 2]]'' are made out of [[Randomness|random]]ly placed '''units'''. There are units that represent dead ends, corridors, crossings, and rooms. Every cave's sublevel has a list of units that can be used by the game to create it; the latter is then responsible to randomly align the units in order to create a level with no unconnected exits.

There are three types of units, as defined by the "room type" property, declared in the sublevel unit definition text files:
*Dead ends/alcoves: These close off pathways and exits of rooms. Internally, these are called "caps", and their "room type" is 0.
*Corridors: pathways and corridors that normally don't have any special features; their walls decide the path or paths the player can take. Their "room type" is 2.
*Rooms: decorated and often large rooms, featuring walls and objects organized in a certain fashion. Their "room type" is 1.

In [[2-Player Battle]], for all caves excluding the [[Dim Labyrinth]], there is a static list of units to use, as well as their position and rotation. Instead of the game generating a cave using the available units, it only has to pick one of the available static layouts. These static layouts can be found in <code>/user/Abe/vs</code>.

==Regular units==
The following is a list of all existing units in ''Pikmin 2'', used and [[Unused content in Pikmin 2|unused]], and sorted by theme. The themes are named based on the common word in the units' names.

===Concrete===
Units in the concrete theme have their names end with "conc", which is likely short for {{j|コンクリート|konkurīto|concrete|f=tp}}; this word comes from the concrete walls that these units have.

<gallery>
File:P2CU_cap_conc.jpg|'''cap_conc''': Dead end.
File:P2CU_item_cap_conc.jpg|'''item_cap_conc''': Dead end (that presumably contains an item).
File:P2CU_room_16x17r_conc.jpg|'''room_16x17r_conc''': Large unit with a circular room, a roughly plus-shaped room and a corridor with a stream of water, connected by pipes. It only appears on the [[Hidden Garden]] and sublevel 4 of the [[Shower Room]], being the only unit in both.
File:P2CU_room_4x4a_4_conc.jpg|'''room_4x4a_4_conc''': Basic 4x4 room.
File:P2CU_room_4x4b_4_conc.jpg|'''room_4x4b_4_conc''': 4x4 room with a small portion of it closed inward.
File:P2CU_room_4x4c_4_conc.jpg|'''room_4x4c_4_conc''': 4x4 room with roots.
File:P2CU_room_4x4d_4_conc.jpg|'''room_4x4d_4_conc''': 4x4 room with a partially rocky floor and some extra walls.
File:P2CU_room_4x4e_4_conc.jpg|'''room_4x4e_4_conc''': 4x4 room, similar to the first, but with a C-shaped wall in the middle.
File:P2CU_room_4x4f_4_conc.jpg|'''room_4x4f_4_conc''': 4x4 room with a raised stone platform.
File:P2CU_room_4x4g_4_conc.jpg|'''room_4x4g_4_conc''': 4x4 room with 2 extra walls, one in the middle.
File:P2CU_room_4x4g_water_4_conc.jpg|'''room_4x4g_water_4_conc''': 4x4 room with 2 extra walls, one in the middle, and water. Only used on sublevel 1 of the [[Submerged Castle]].
File:P2CU_room_dan4x4h_2_conc.jpg|'''room_dan4x4h_2_conc''': 4x4 room with the southwestern portion rising up. "dan" means {{j|段|dan|step|f=tp}}.
File:P2CU_room_dan4x4i_3_conc.jpg|'''room_dan4x4i_3_conc''': 4x4 room with some rising portions, a stony floor, and a sub-room at the north. "dan" means {{j|段|dan|step|f=tp}}.
File:P2CU_room_DKumo16x10t_conc.jpg|'''room_DKumo16x10t_conc''': Circular room, two roughly square rooms and a smaller circular room, connected by brief corridors. This is where the [[Beady Long Legs]] is first fought. "DKumo" refers to the boss, {{j|ダマグモ|Dama Gumo|Orb Spider|f=tp}}.
File:P2CU_room_hitode3x3m_5_conc.jpg|'''room_hitode3x3m_5_conc''': 3x3 room with a wall partially separating the north and south, and a partial and thick central wall on the south. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_manh7x7p_9_conc.jpg|'''room_manh7x7p_9_conc''': 7x7 circular room in the center, with 8 openings (and 9 exits) scattered around. It's the main room in the [[Dweevil Nest]]. "manh" could refer to "manhole".
File:P2CU_room_manh7x7q_8_conc.jpg|'''room_manh7x7q_8_conc''': 7x7 room similar to the previous one, but the center of the room has a sandpit. [[Snavian|Snagrets]] are commonly fought here. "manh" could refer to "manhole".
File:P2CU_room_manh_2_conc.jpg|'''room_manh_2_conc''': Large circular room with a partially stoned floor. "manh" could refer to "manhole".
File:P2CU_room_north4x4j_1_conc.jpg|'''room_north4x4j_1_conc''': 4x4 room with some rocky terrain, a wall, and a tube.
File:P2CU_room_north4x4k_1_bomb_conc.jpg|'''room_north4x4k_1_bomb_conc''': 4x4 room with a rusty open pipe and a crevice. "bomb" refers to the fact that this sublevel was used in a unused sublevel as part of a puzzle involving [[bomb rock]]s. Unused.
File:P2CU_room_north4x4k_1_conc.jpg|'''room_north4x4k_1_conc''': The same as the previous room, except portion of the tube is underground. Sublevel 2 of the [[Submerged Castle]] always ends with this.
File:P2CU_room_north4x4l_1_conc.jpg|'''room_north4x4l_1_conc''': Corridor that leads to a dead end, after a U-turn.
File:P2CU_room_Oashi8x9_conc.jpg|'''room_Oashi8x9_conc''': Large circular room with a partially stoned floor, and light shining from above. It's only used on sublevel 15 of the [[Hole of Heroes]], where the [[Raging Long Legs]] is fought. "Oashi" is part of the boss' name, {{j|ゾウノアシ|Zounoashi|Elephant Feet|f=tp}}.
File:P2CU_room_pype10x18s_conc.jpg|'''room_pype10x18s_conc''': 10x18 room with a central room, connected to a small circular room by a small tube, and a huge tube with flowing water spanning all-throughout. It's the main part of sublevel 2 of the [[Submerged Castle]]. "pype" means "pipe".
File:P2CU_room_pype3x4n_2_conc.jpg|'''room_pype3x4n_2_conc''': 3x4 room with a pipe that opens on the top and east, as well as a rusted opening. "pype" means "pipe".
File:P2CU_room_pype4x4o_3_conc.jpg|'''room_pype4x4o_3_conc''': 4x4 room with a pipe similar to the one in the previous unit, but on the center. "pype" means "pipe".
File:P2CU_room_spiral_1_conc.jpg|'''room_spiral_1_conc''': A small maze of concrete walls on sand, with the center spiraling. Only used on sublevel 8 of the [[Dream Den]].
File:P2CU_way2x2_conc.jpg|'''way2x2_conc''': Straight corridor, 1x2.
File:P2CU_way2_conc.jpg|'''way2_conc''': Straight corridor.
File:P2CU_way3_conc.jpg|'''way3_conc''': Three-way crossing.
File:P2CU_way4_conc.jpg|'''way4_conc''': Four-way crossing.
File:P2CU_wayl_conc.jpg|'''wayl_conc''': Turning corridor.
</gallery>

===Garden===
Units in the garden theme have have their names end with "kusachi" ({{j|草地|kusachi|meadow}}).

<gallery>
File:P2CU_cap_kusachi.jpg|'''cap_kusachi''': Dead end.
File:P2CU_item_cap_kusachi.jpg|'''item_cap_kusachi''': Dead end (that presumably contains an item).
File:P2CU_room_5x5a_2_kusachi.jpg|'''room_5x5a_2_kusachi''': Room with a splitting path that circle around a central area. One of the paths is a dead end.
File:P2CU_room_big2_kusachi.jpg|'''room_big2_kusachi''': Like the bucket room, except without the bucket, shovel, or sand. Used only on sublevel 1 of the [[Breeding Ground]] and sublevel 1 of the [[Hole of Heroes]].
File:P2CU_room_big_kusachi.jpg|'''room_big_kusachi''': Room with an upside-down bucket on top of sand, and a toy shovel leaning on it.
File:P2CU_room_ike_kusachi.jpg|'''room_ike_kusachi''': Like the large three-way crossing room, but with a pond in the middle; it can be crossed with some small wooden boards placed on top. "ike" means {{j|池|ike|pond|f=tp}}.
File:P2CU_room_mid_kusachi.jpg|'''room_mid_kusachi''': Large three-way crossing.
File:P2CU_room_torigoya_kusachi.jpg|'''room_torigoya_kusachi''': Small circular rooms with roots, connected by a crossing corridor, and a pathway to a birdhouse with light shining through the window. Exclusive to sublevel 1 of the [[Snagret Hole]]. "torigoya" means {{j|鳥小屋|torigoya|aviary|f=tp}}.
File:P2CU_way2x2_kusachi.jpg|'''way2x2_kusachi''': Straight corridor, 1x2.
File:P2CU_way2_kusachi.jpg|'''way2_kusachi''': Straight corridor.
File:P2CU_way3_kusachi.jpg|'''way3_kusachi''': Three-way crossing.
File:P2CU_way4_kusachi.jpg|'''way4_kusachi''': Four-way crossing, featuring a twig with a leaf. Unused, as none of the used floor setups allow it to appear.
File:P2CU_wayl_kusachi.jpg|'''wayl_kusachi''': Turning corridor.
</gallery>

===Metal===
Units in the metal theme have their names end with "metal".

<gallery>
File:P2CU_cap_metal.jpg|'''cap_metal''': Dead end.
File:P2CU_item_cap_metal.jpg|'''item_cap_metal''': Dead end (that presumably contains an item).
File:P2CU_room_ari1_3_metal.jpg|'''room_ari1_3_metal''': Circular room with three rusty overhangs in the middle.
File:P2CU_room_cent_4_metal.jpg|'''room_cent_4_metal''': Room with 4 exits and a bit of purple metal on the center. "cent" could mean "center".
File:P2CU_room_hitode2x2_4_metal.jpg|'''room_hitode2x2_4_metal''': Room with a very rusted metal board, with two tubes sticking up. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode2x3_5_metal.jpg|'''room_hitode2x3_5_metal''': Large four-way crossing, in an X shape. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode3x3_5_metal.jpg|'''room_hitode3x3_5_metal''': Room with a raised platform in the corner, with a blue metal circle, sometimes housing an [[Armored Cannon Larva|Armored Cannon Beetle Larva]]. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode3x4_4_metal.jpg|'''room_hitode3x4_4_metal''': Room with 4 exits. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode4x4_3_metal.jpg|'''room_hitode4x4_3_metal''': Circular room with a raised platform in the corner, with dark and blue metal, commonly housing an [[Armored Cannon Larva|Armored Cannon Beetle Larva]]. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode4x4_6_metal.jpg|'''room_hitode4x4_6_metal''': Room with a permanently-closed small rusty hatch. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode4x4_7_metal.jpg|'''room_hitode4x4_7_metal''': Room with a large blue metal circle near the center, as well as a smaller one on a raised platform. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode4x4_tower_3_metal.jpg|'''room_hitode4x4_tower_3_metal''': Like the circular room with a raised platform that normally houses [[Armored Cannon Larva|Armored Cannon Beetle Larva]]e, but with a tower in the center instead. Used only on sublevel 7 of [[Subterranean Complex]] and sublevel 1 of the [[Rusty Gulch]]. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_houdai2_1_metal.jpg|'''room_houdai2_1_metal''': Room with several walls, and a pond with a white circle in the center. This is one of the [[Man-at-Legs]]'s arenas. "houdai" is the boss' internal name.
File:P2CU_room_houdai_1_metal.jpg|'''room_houdai_1_metal''': Circular room with a spiderweb-like formation on the ground. This is one of the [[Man-at-Legs]]'s arenas. "houdai" is the boss' internal name.
File:P2CU_room_mid1_6_metal.jpg|'''room_mid1_6_metal''': Slightly long room with a circle of blue metal on one end and rusty red metal on another. "mid" means "middle (sized)".
File:P2CU_room_mid2_3_metal.jpg|'''room_mid2_3_metal''': Room with two circles of rusty red metal and three exits. "mid" means "middle (sized)".
File:P2CU_room_nobo1_4_metal.jpg|'''room_nobo2_4_metal''': Huge room mostly comprised of corridors, zigzagging and spiraling up and down. "nobo" means {{j|上る|nobo|ascend|f=tp}}.
File:P2CU_room_north2x2_1_metal.jpg|'''room_north2x2_1_metal''': T-shaped room with only one exit.
File:P2CU_room_north_1_metal.jpg|'''room_north_1_metal''': Circular room with only one exit.
File:P2CU_room_white14x12_metal.jpg|'''room_white14x12_metal''': Soil room with shine lighting through the ceiling, connected to a metal room and a small circular room by corridors. This is where [[White Pikmin]] are found, and is only used on sublevel 3 of the [[White Flower Garden]].
File:P2CU_way2x2_metal.jpg|'''way2x2_metal''': Straight corridor, 1x2.
File:P2CU_way2_metal.jpg|'''way2_metal''': Straight corridor.
File:P2CU_way3_metal.jpg|'''way3_metal''': Three-way crossing.
File:P2CU_way4_metal.jpg|'''way4_metal''': Four-way crossing.
File:P2CU_wayl_metal.jpg|'''wayl_metal''': Turning corridor.
</gallery>

===Snow===
Units in the snow theme have their names end with "snow" or "renga" ({{j|レンガ|renga|brick}}), due to the brick walls they have.

<gallery>
File:P2CU_cap_snow.jpg|'''cap_snow''': Dead end.
File:P2CU_item_cap_snow.jpg|'''item_cap_snow''': Dead end (that presumably contains an item).
File:P2CU_room_4x4a_4_renga.jpg|'''room_4x4a_4_renga''': Simple 4x4 room, with brick walls.
File:P2CU_room_4x4d_4_renga.jpg|'''room_4x4d_4_renga''': 4x4 brick and snow room with a few extra walls.
File:P2CU_room_4x4g_4_renga.jpg|'''room_4x4g_4_renga''': 4x4 room with 2 extra walls, one in the middle.
File:P2CU_room_block1_3_snow.jpg|'''room_block1_3_snow''': Room with a rectangular opening on a stone wall.
File:P2CU_room_dan4x4h_2_renga.jpg|'''room_dan4x4h_2_renga''': 4x4 room with the southwestern portion rising up. "dan" means {{j|段|dan|step|f=tp}}.
File:P2CU_room_hitode2_5_snow.jpg|'''room_hitode2_5_snow''': Room with 5 exits. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode3x3m_5_renga.jpg|'''room_hitode3x3m_5_renga''': 3x3 room with a brick wall partially separating the north and south, and a partial and thick central brick wall on the south. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode3_4_snow.jpg|'''room_hitode3_4_snow''': Room with 4 exits. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_ike3_2_snow.jpg|'''room_ike3_2_snow''': Room with a ramp leading to the top of a wall that's in the center. "ike" means {{j|池|ike|pond|f=tp}}.
File:P2CU_room_mid1_6_snow.jpg|'''room_mid1_6_snow''': Large room with 6 exits. "mid" means "middle (sized)".
File:P2CU_room_mid2_3_snow.jpg|'''room_mid2_3_snow''': Room that splits into 2. "mid" means "middle (sized)".
File:P2CU_room_north4_1_snow.jpg|'''room_north4_1_snow''': Same as the circular room with only one exit, but with 3 pieces of lumber perpendicular to one another, 2 of them slightly burrowed.
File:P2CU_room_north_1_snow.jpg|'''room_north_1_snow''': Circular room with only one exit.
File:P2CU_room_purple14x14_snow.jpg|'''room_purple14x14_snow''': A snowy room and a large circular room, with light shining in, connected by a corridor. This is where [[Purple Pikmin]] are first discovered. It's the only unit with a bit of the ceiling modeled.
File:P2CU_room_saka1_1_snow.jpg|'''room_saka1_1_snow''': Circular room with a lightly rising curved edge and a tree trunk in the center. "saka" means {{j|坂|saka|slope|f=tp}}.
File:P2CU_room_saka2_2_snow.jpg|'''room_saka2_2_snow''': Room with a C-shaped raised chunk of wood. "saka" means {{j|坂|saka|slope|f=tp}}.
File:P2CU_room_uzu1_1_snow.jpg|'''room_uzu1_1_snow''': Circular room with a spiral going upwards, with parts of it not covered by snow. "uzu" means {{j|渦|uzu|whirlpool|f=tp}}.
File:P2CU_way2x2_snow.jpg|'''way2x2_snow''': Straight corridor, 1x2.
File:P2CU_way2_snow.jpg|'''way2_snow''': Straight corridor.
File:P2CU_way3_snow.jpg|'''way3_snow''': Three-way crossing.
File:P2CU_way4_snow.jpg|'''way4_snow''': Four-way crossing.
File:P2CU_wayl_snow.jpg|'''wayl_snow''': Turning corridor.
</gallery>

===Soil===
Units in the soil theme have their names end with "tsuchi" ({{j|つち|tsuchi|soil}}).

<gallery>
File:P2CU_cap_tsuchi.jpg|'''cap_tsuchi''': Dead end.
File:P2CU_item_cap_tsuchi.jpg|'''item_cap_tsuchi''': Dead end (that presumably contains an item).
File:P2CU_room_block1_3_tsuchi.jpg|'''room_block1_3_tsuchi''': Room with a rectangular opening on a stone wall.
File:P2CU_room_boss_1_tsuchi.jpg|'''room_boss_1_tsuchi''': Room with 2 subrooms, one with white splatters, the other with a discarded [[Empress Bulblax]] skin. It's used on sublevel 5 of the [[Hole of Beasts]].
File:P2CU_room_cent2_4_tsuchi.jpg|'''room_cent2_4_tsuchi''': Same as the circular room with 4 long exits, except there's a patch of grass in the center, bathed in sunlight. "cent" could mean "center".
File:P2CU_room_cent3_4_tsuchi.jpg|'''room_cent3_4_tsuchi''': Same as the previous room, but with a large patch of grass and scattered petals in the middle, bathed in sunlight. "cent" could mean "center".
File:P2CU_room_cent_4_tsuchi.jpg|'''room_cent_4_tsuchi''': Circular room with 4 evenly spread and long exits. "cent" could mean "center".
File:P2CU_room_hebi12x12_1_tsuchi.jpg|'''room_hebi12x12_1_tsuchi''': Circular room with a spiral design on the floor, and some corridors attached. Used in sublevel 5 of the [[White Flower Garden]]. "hebi" is part of the [[Burrowing Snagret]]'s name, {{j|ヘビガラス|Hebigarasu|Snake Crow|f=tp}}).
File:P2CU_room_hitode1_5_tsuchi.jpg|'''room_hitode1_5_tsuchi''': Room with 5 exits and two stalagmites. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode2_5_tsuchi.jpg|'''room_hitode2_5_tsuchi''': Room with 5 exits. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode3_4_tsuchi.jpg|'''room_hitode3_4_tsuchi''': Room with 4 exits. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode4_4_tsuchi.jpg|'''room_hitode4_4_tsuchi''': Partially rounded room with 4 exits. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_ike1_2_tsuchi.jpg|'''room_ike1_2_tsuchi''': Room with water and a ramp leading to the top of a wall that's in the center. "ike" means {{j|池|ike|pond|f=tp}}.
File:P2CU_room_ike2_4_tsuchi.jpg|'''room_ike2_4_tsuchi''': Room with a small island in a pool of water. "ike" means {{j|池|ike|pond|f=tp}}.
File:P2CU_room_ike3_2_tsuchi.jpg|'''room_ike3_2_tsuchi''': Like the room before the previous one, except with no water on the base of the ramp. "ike" means {{j|池|ike|pond|f=tp}}.
File:P2CU_room_ike4_5_tsuchi.jpg|'''room_ike4_5_tsuchi''': Large room with a lot of water and several tree trunks above water. It's the main room in sublevel 6 of the [[Hole of Heroes]]. "ike" means {{j|池|ike|pond|f=tp}}.
File:P2CU_room_kingchap_a_tsuchi.jpg|'''room_kingchap_a_tsuchi''': Two spherical rooms connected by a crossing corridor. Only used on sublevel 7 of the [[Bulblax Kingdom]] and sublevel 2 of the [[Emperor's Realm]]. "kingchap" is short for "kingchappy", the [[Emperor Bulblax]]'s internal name.
File:P2CU_room_kingchap_b_tsuchi.jpg|'''room_kingchap_b_tsuchi''': Room with a ledge that can be reached by [[throw]]ing Pikmin through one side or from a path through the pond. This is where the [[Gyroid Bust]] is found. "kingchap" is short for "kingchappy", the [[Emperor Bulblax]]'s internal name.
File:P2CU_room_kingchp_tsuchi.jpg|'''room_kingchp_tsuchi''': Room with a tree's roots, and several ponds. [[Emperor Bulblax]]es can be found here. "kingchap" is short for "kingchappy", the Emperor Bulblax's internal name.
File:P2CU_room_mid1_6_tsuchi.jpg|'''room_mid1_6_tsuchi''': Large room with 6 exits. "mid" means "middle (sized)".
File:P2CU_room_mid2_3_tsuchi.jpg|'''room_mid2_3_tsuchi''': Room that joins two paths into one. "mid" means "middle (sized)".
File:P2CU_room_north2_1_tsuchi.jpg|'''room_north2_1_tsuchi''': Corridor with a dead end.
File:P2CU_room_north3_1_tsuchi.jpg|'''room_north3_1_tsuchi''': Corridor with a dead end after a U-turn.
File:P2CU_room_north4_1_tsuchi.jpg|'''room_north4_1_tsuchi''': Like the circular room with 1 exit, but with three connected pieces of lumber perpendicular to one another, partially burrowed.
File:P2CU_room_north_1_tsuchi.jpg|'''room_north_1_tsuchi''': Circular room with a single exit.
File:P2CU_room_queen_b_tsuchi.jpg|'''room_queen_b_tsuchi''': From the starting point, there's a double-S-shaped corridor. After this is the main room, squareish in shape. Finally, there's a room connected with a corridor afterwards. The [[Empress Bulblax]] on the [[Frontier Cavern]] is fought here. "queen" is the boss' internal name.
File:P2CU_room_queen_c_tsuchi.jpg|'''room_queen_c_tsuchi''': Like the first [[Empress Bulblax]] room, but without the small alcoves and without the discarded skin. The creature is fought here on sublevel 11 of the [[Hole of Heroes]] and sublevel 4 of the [[Emperor's Realm]]. "queen" is the boss' internal name.
File:P2CU_room_saka1_1_tsuchi.jpg|'''room_saka1_1_tsuchi''': Circular room with a lightly rising curved edge and a tree trunk in the center. "saka" means {{j|坂|saka|slope|f=tp}}.
File:P2CU_room_saka2_2_tsuchi.jpg|'''room_saka2_2_tsuchi''': Room with a C-shaped raised chunk of wood. "saka" means {{j|坂|saka|slope|f=tp}}.
File:P2CU_room_uzu1_1_tsuchi.jpg|'''room_uzu1_1_tsuchi''': Circular room with a spiral going upwards. "uzu" means {{j|渦|uzu|whirlpool|f=tp}}.
File:P2CU_way2x2_tsuchi.jpg|'''way2x2_tsuchi''': Straight corridor, 1x2.
File:P2CU_way2_tsuchi.jpg|'''way2_tsuchi''': Straight corridor.
File:P2CU_way3_tsuchi.jpg|'''way3_tsuchi''': Three-way crossing.
File:P2CU_way4_tsuchi.jpg|'''way4_tsuchi''': Four-way crossing.
File:P2CU_way6_tsuchi.jpg|'''way6_tsuchi''': Path that splits into 5, with some odd dirt texture on the ground. Unused.
File:P2CU_wayl_tsuchi.jpg|'''wayl_tsuchi''': Turning corridor.
</gallery>

===Toybox===
Units in the toybox theme have their names end with "toy".

<gallery>
File:P2CU_cap_toy.jpg|'''cap_toy''': Dead end.
File:P2CU_item_cap_toy.jpg|'''item_cap_toy''': Dead end (that presumably contains an item).
File:P2CU_room_hitode4x7_3_toy.jpg|'''room_hitode4x7_3_toy''': Large three-way crossing with building blocks making up some walls. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode6x6_3_toy.jpg|'''room_hitode6x6_3_toy''': Room with some walls and a box with some unsharpened pencils and building blocks. This version is only used on sublevel 1 of the [[Lost Toy Box]]. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_hitode6x7_4_toy.jpg|'''room_hitode6x7_4_toy''': Large four-way crossing. "hitode" means {{j|人出|hitode|turnout|f=tp}}.
File:P2CU_room_large_7_toy.jpg|'''room_large_7_toy''': Room with a toy train track and some houses serving as walls.
File:P2CU_room_mid2_8_toy.jpg|'''room_mid2_8_toy''': Same as the room with the xylophone, but without the instrument. "mid" means "middle (sized)".
File:P2CU_room_mid_8_toy.jpg|'''room_mid_8_toy''': Room with a xylophone and two playing sticks in the middle. "mid" means "middle (sized)".
File:P2CU_room_mid_sara2_8_toy.jpg|'''room_mid_sara2_8_toy''': Room with three colored half-discs, leading to sand pits. "sara" means {{j|皿|sara|plate|f=tp}}.
File:P2CU_room_mid_sara_8_toy.jpg|'''room_mid_sara_8_toy''': Room with a baby plate in the center. "sara" means {{j|皿|sara|plate|f=tp}}.
File:P2CU_room_mid_tower2_8_toy.jpg|'''room_mid_tower2_8_toy''': Room with a tower in the middle, and some walls scattered around to provide protection from the [[Gatling Groink]]s commonly found atop the tower. Used only on sublevel 1 of [[Three Color Training]].
File:P2CU_room_mid_tower_8_toy.jpg|'''room_mid_tower_8_toy''': Like the previous room, but the base of the tower is less round, and there are extra walls scattered around.
File:P2CU_room_opan_toy.jpg|'''room_opan_toy''': Huge room enclosed by walls, with building block scattered about and 3 large plates on top of a picnic cloth. This is where the [[Giant Breadbug]] is fought. "opan" is part of the boss' name, {{j|オオパンモドキ|Oopanmodoki|Giant Bread Beetle|f=tp}}.
File:P2CU_room_small2_5_toy.jpg|'''room_small2_5_toy''': Same as the room with the tambourine, but without the instrument.
File:P2CU_room_small_5_toy.jpg|'''room_small_5_toy''': Room with a tambourine in the middle.
File:P2CU_way2x2_toy.jpg|'''way2x2_toy''': Straight corridor, 1x2. Features a small bump.
File:P2CU_way2_toy.jpg|'''way2_toy''': Corridor.
File:P2CU_way3_toy.jpg|'''way3_toy''': Three-way crossing.
File:P2CU_way4_toy.jpg|'''way4_toy''': Four-way crossing. Features four poles connected by an X-shaped wire. Rare, but can be seen on sublevel 3 of the [[Glutton's Kitchen]]. It is also in the cave unit list files for [[Carpet Plain]], but can only be seen if the "random forcer" is used in [[New Play Control! Pikmin 2]].
File:P2CU_wayl_toy.jpg|'''wayl_toy''': Turning corridor.
</gallery>

===Tiles===
Units in the tiles theme have their names end with "tile". The tile theme does not actually have corridors attached to it; instead, there is a different "pipe" theme that is used exclusively for the tile theme's corridors.

<gallery>
File:P2CU_cap_pipe.jpg|'''cap_pipe''': Dead end.
File:P2CU_item_cap_pipe.jpg|'''item_cap_pipe''': Dead end (that presumably contains an item).
File:P2CU_room_4x4a_4_tile.jpg|'''room_4x4a_4_tile''': Simple 4x4 room.
File:P2CU_room_4x4d_4_tile.jpg|'''room_4x4d_4_tile''': 4x4 room with some extra walls.
File:P2CU_room_4x4f_4_tile.jpg|'''room_4x4f_4_tile''': 4x4 room with a raised tile platform.
File:P2CU_room_bunki7x7_8_tile.jpg|'''room_bunki7x7_8_tile''': A large 7x7 room. It's the main room of the [[Subterranean Lair]] and sublevel 7 of the [[Hole of Heroes]]. "bunki" means {{j|分岐|bunki|forking|f=tp}}.
File:P2CU_room_dangomushi_tile.jpg|'''room_dangomushi_tile''': One large square room connected to two smaller subrooms. This is where the [[Segmented Crawbster]] is fought. "dangomushi" is the boss' internal name.
File:P2CU_room_drypool5x5_5_tile.jpg|'''room_drypool5x5_5_tile''': Same as the pool room, but without the water.
File:P2CU_room_north2x2_1_tile.jpg|'''room_north2x2_1_tile''': T-shaped room with only one exit.
File:P2CU_room_north4x4l_1_tile.jpg|'''room_north4x4l_1_tile''': Corridor that leads to a dead end, after a U-turn.|alt=room_north4x4l_1
File:P2CU_room_oootakara_tile.jpg|'''room_oootakara_tile''': Large square sink, with no drain, and scattered pieces of tiles around. Home of the [[Titan Dweevil]]. "oootakara" is the boss' internal name on some files.
File:P2CU_room_pool5x5_5_tile.jpg|'''room_pool5x5_5_tile''': Room with a rectangular center that's lowered, like a pool; an escape ramp exists.
File:P2CU_room_tako2x2_8_tile.jpg|'''room_tako2x2_8_tile''': Room with 4 exits. "tako" means {{j|凧|tako|kite|f=tp}}.
File:P2CU_room_ud4x4_2_tile.jpg|'''room_ud4x4_2_tile''': Room with the northern and southern edges lowering a bit.
File:P2CU_room_u_jikou1_4x4_2_tile.jpg|'''room_u_jikou1_4x4_2_tile''': Room with a large bump of sand and a waterway path, covered by a grill.
File:P2CU_room_yukoana1_5x3_2_tile.jpg|'''room_yukoana1_5x3_2_tile''': Corridor with 6 small pipes, 3 on each side.
File:P2CU_way2x2_pipe.jpg|'''way2x2_pipe''': Straight corridor, 1x2.
File:P2CU_way2_pipe.jpg|'''way2_pipe''': Straight corridor.
File:P2CU_way3_pipe.jpg|'''way3_pipe''': Three-way crossing. This unit has a hole visible in the back wall that cannot be moved through, even though it is at ground level and just the same size as a captain.
File:P2CU_way4_pipe.jpg|'''way4_pipe''': Four-way crossing.
File:P2CU_wayl_pipe.jpg|'''wayl_pipe''': Turning corridor.
</gallery>

==Others==
===Pathways with items===
The following units are copies of the regular pathway units, but presumed to have items (normally [[egg]]s) in them, judging by the names. All of these are unused.

<gallery>
File:P2CU_item_way3_conc.jpg|'''item_way3_conc''': Concrete three-way crossing that presumably contains an item. Unused.
File:P2CU_item_way3_metal.jpg|'''item_way3_metal''': Metal three-way crossing that presumably contains an item. Unused.
File:P2CU_item_way3_tsuchi.jpg|'''item_way3_tsuchi''': Soil three-way crossing that presumably contains an item. Unused.
File:P2CU_item_way4_conc.jpg|'''item_way4_conc''': Concrete four-way crossing that presumably contains an item. Unused.
File:P2CU_item_way4_metal.jpg|'''item_way4_metal''': Metal four-way crossing that presumably contains an item. Unused.
File:P2CU_item_way4_tsuchi.jpg|'''item_way4_tsuchi''': Soil four-way crossing that presumably contains an item. Unused.
File:P2CU_item_wayl_conc.jpg|'''item_wayl_conc''': Turning concrete corridor that presumably contains an item. Unused.
File:P2CU_item_wayl_metal.jpg|'''item_wayl_metal''': Turning metal corridor that presumably contains an item. Unused.
File:P2CU_item_wayl_tsuchi.jpg|'''item_wayl_tsuchi''': Turning soil corridor that presumably contains an item. Unused.
</gallery>

===Near duplicates===
These units are near duplicates of existing units, differing only on certain internal files. These duplicates could exist for a variety of reasons, but most of the time, it's to change the general layout of an existing unit, for the purposes of the cave or the objects within.

<gallery>
File:P2CU_room_5x5a_2_kusachi.jpg|'''room_5x5a_2_tekiF_kusachi''': Near duplicate of '''room_5x5a_2_kusachi''' (garden two way split, 2 exits), differing only on '''layout.txt'''. Used only on the [[Sniper Room]]. "tekiF" refers to the "f" version of an enemy; in this case, the stationary [[Armored Cannon Larva|Armored Cannon Beetle Larva]].
File:P2CU_room_big_kusachi.jpg|'''room_big_tekiF_kusachi''': Near duplicate of '''room_big_kusachi''' (garden room with an upside-down bucket), differing only on '''grid.bin''' and '''layout.txt'''. Used only on the Sniper Room. "tekiF" refers to the "f" version of an enemy; in this case, the stationary [[Gatling Groink]].
File:P2CU_room_block1_3_tsuchi.jpg|'''room_block1_3_hiba_tsuchi''': Near duplicate of '''room_block1_3_tsuchi''' (soil room with a wall with a rectangular hole), differing only on '''layout.txt'''. Used only on sublevel 3 of the [[Hole of Beasts]] and sublevel 1 of the [[Emperor's Realm]]. "hiba" is the internal name for the [[fire geyser]]s.
File:P2CU_room_cent_4_metal.jpg|'''room_cent2_4_metal''': Near duplicate of '''room_cent_4_metal''' (large metal four-way crossing with purple center), differing only on '''layout.txt'''. Used only on sublevel 1 of the [[White Flower Garden]] and sublevel 12 of the [[Hole of Heroes]].
File:P2CU_room_cent_4_tsuchi.jpg|'''room_cent_4_mat_tsuchi''': Near duplicate of '''room_cent_4_tsuchi''' (circular soil room with 4 long exits), differing only on '''layout.txt'''. Unused.
File:P2CU_room_hitode4x4_3_metal.jpg|'''room_hitode4x4_tekiF_3_metal''': Near duplicate of '''room_hitode4x4_3_metal''' (metal room with raised platform with [[Armored Cannon Larva|Armored Cannon Beetle Larva]]e), differing only on '''layout.txt'''. Used only on sublevel 3 of the [[Subterranean Complex]] and sublevel 1 of the [[Brawny Abyss]]. "tekiF" refers to the "f" version of an enemy; in this case, the stationary Armored Cannon Beetle Larva.
File:P2CU_room_hitode6x6_3_toy.jpg|'''room_hitode6x6_yakushima_3_toy''': Near duplicate of '''room_hitode6x6_3_toy''' (toybox room with a box containing crayons and building blocks), differing only on '''layout.txt'''. Used only on sublevel 1 of the [[Glutton's Kitchen]].
File:P2CU_room_manh7x7p_9_conc.jpg|'''room_manh7x7p_boss_conc''': Near duplicate of '''room_manh7x7p_9_conc''' (large circular room with 8 exits), differing only on '''layout.txt'''. Used only on the [[Angle Maze]] ([[Raging Long Legs]]) and sublevel 7 of the [[Snagret Hole]].
File:P2CU_room_manh_2_conc.jpg|'''room_manh_boss_conc''': Near duplicate of '''room_manh_2_conc''' (large circular concrete room with a partial stone floor), differing only on '''layout.txt''' and '''route.txt'''. Used only on sublevel 5 of the [[Submerged Castle]].
File:P2CU_room_mid1_6_tsuchi.jpg|'''room_mid1_6_boss_tsuchi''': Near duplicate of '''room_mid1_6_tsuchi''' (large soil room with 6 exits), differing only on '''layout.txt'''. Used only on sublevel 3 of the Snagret Hole.
File:P2CU_room_nobo1_4_metal.jpg|'''room_nobo1_4_metal''': Near duplicate of '''room_nobo2_4_metal''' (huge zigzagging and spiraling metal room), differing only on '''layout.txt'''. Unused.
File:P2CU_room_north2x2_1_tile.jpg|'''room_north2x2_1_tekiF_tile''': Near duplicate of '''room_north2x2_1_tile''' (square tile room with one exit), differing only on '''layout.txt'''. Used only on sublevel 1 of [[The Giant's Bath]] and sublevel 2 of [[Hazard Training]]. "tekiF" refers to the "f" version of an enemy; in this case, it possibly refers to the [[Toady Bloyster]] (as opposed to the [[Ranging Bloyster]]).
File:P2CU_room_north_1_snow.jpg|'''room_north_tutorial_1_snow''': Near duplicate of '''room_north_1_snow''', differing only on '''layout.txt''' and '''route.txt'''. Used only on sublevel 1 of the [[Emergence Cave]].
File:P2CU_room_north_1_tsuchi.jpg|'''room_north_1_hiba_tsuchi''': Near duplicate of '''room_north_1_tsuchi''' (circular soil room with one exit), differing only on '''layout.txt''' and '''route.txt'''. Used only on sublevel 3 of the [[Hole of Beasts]] and sublevel 2 of [[Emperor's Realm]]. "hiba" is the internal name for the [[fire geyser]]s.
File:P2CU_room_north_1_tsuchi.jpg|'''room_north_1_mat_tsuchi''': Same as the previous one. All three of these units differ in the same files. This one is used in sublevels 1 and 5 of the [[Cryptic Cavern]].
File:P2CU_room_Oashi8x9_conc.jpg|'''room_Oashi8x9_s_conc''': Near duplicate of '''room_Oashi8x9_conc''' (large circular room with partial stone floor and light shining in), differing only on '''layout.txt'''. Used only on the [[Cavernous Abyss]].
File:P2CU_room_tako2x2_8_tile.jpg|'''room_tako2x2_8_tekiF_tile''': Near duplicate of '''room_tako2x2_8_tile''' (square tile room with 4 exits), differing only on '''layout.txt'''. Used only on the [[Bully Den]]. "tekiF" refers to the "f" version of an enemy.
</gallery>

===2-Player variants===
As with the previous section, these units are near duplicates of existing units, but with '''layout.txt''' changed to fit the [[2-Player Battle]] arenas.

<gallery>
File:P2CU_room_5x5a_2_kusachi.jpg|'''room_vs_5x5a_2_kusachi''': Variant of '''room_5x5a_2_kusachi''' (garden room with 2 splitting paths, one with a dead end).
File:P2CU_room_big2_kusachi.jpg|'''room_vs_big2_kusachi''': Variant of '''room_big2_kusachi''' (the room similar to the next one, but without the bucket).
File:P2CU_room_big_kusachi.jpg|'''room_vs_big_kusachi''': Variant of '''room_big_kusachi''' (garden room with an upside-down bucket).
File:P2CU_room_bunki7x7_8_tile.jpg|'''room_vs_bunki7x7_8_tile''': Variant of '''room_bunki7x7_8_tile''' (large square tile room with 5 exits).
File:P2CU_room_drypool5x5_5_tile.jpg|'''room_vs_drypool5x5_5_tile''': Variant of '''room_drypool5x5_5_tile''' (tile room with a dip with no water).
File:P2CU_room_hitode2x3_5_metal.jpg|'''room_vs_hitode2x3_5_metal''': Variant of '''room_hitode2x3_5_metal''' (large four-way metal crossing).
File:P2CU_room_hitode3x3m_5_conc.jpg|'''room_vs_hitode3x3m_5_conc''': Variant of '''room_hitode3x3m_5_conc''' (concrete room with 2 walls in the way).
File:P2CU_room_hitode4x4_6_metal.jpg|'''room_vs_hitode4x4_6_metal''': Variant of '''room_hitode4x4_6_metal''' (room with a rusty closed hatch ).
File:P2CU_room_hitode6x7_4_toy.jpg|'''room_vs_hitode6x7_4_toy''': Variant of '''room_hitode6x7_4_toy''' (garden room with 4 exits).
File:P2CU_room_ike3_2_snow.jpg|'''room_vs_ike3_2_snow''': Variant of '''room_ike3_2_snow''' (snow room with a ramp leading to the top of a wall in the middle).
File:P2CU_room_mid1_6_tsuchi.jpg|'''room_vs_mid1_6_tsuchi''': Variant of '''room_mid1_6_tsuchi''' (soil room with 6 exits).
File:P2CU_room_mid_kusachi.jpg|'''room_vs_mid_kusachi''': Variant of '''room_mid_kusachi''' (large three-way garden crossing).
File:P2CU_room_mid_sara2_8_toy.jpg|'''room_vs_mid_sara2_8_toy''': Variant of '''room_mid_sara2_8_toy''' (garden room with 3 colored half-discs).
File:P2CU_room_nobo1_4_metal.jpg|'''room_vs_nobo2_4_metal''': Variant of '''room_nobo2_4_metal''' (zigzagging and spiraling metal corridors).
File:P2CU_room_north2x2_1_tile.jpg|'''room_vs_north2x2_1_tile''': Variant of '''room_north2x2_1_tile''' (square tile room with one exit).
File:P2CU_room_north_1_metal.jpg|'''room_vs_north_1_metal''': Variant of '''room_north_1_metal''' (large circular metal room with one exit).
File:P2CU_room_saka2_2_snow.jpg|'''room_vs_saka2_2_snow''': Variant of '''room_saka2_2_snow''' (snow room with a spiraling wooden ledge and alcove).
File:P2CU_room_spiral_1_conc.jpg|'''room_vs_spiral_1_conc''': Variant of '''room_spiral_1_conc''' (concrete room with spiraling and zigzagging corridors).
File:P2CU_room_yukoana1_5x3_2_tile.jpg|'''room_vs_yukoana1_5x3_2_tile''': Variant of '''room_yukoana1_5x3_2_tile''' (tile corridor with 6 pipes).
</gallery>

[[Category:Caves| ]]
[[Category:Technical]]