The Subterranean Complex (地下の秘密基地?, lit.: "Subterranean Secret Base") is a cave in the Valley of Repose, and is typically the second cave accessed in the area. It starts out as a snow-covered cave like the Emergence Cave; however, as one goes deeper into the complex it becomes a rusty, mechanical area with bottomless pits. Many of the enemies here have projectile and explosive attacks – be very careful when handling Pikmin, as explosions will kill them instantly. The boss of the cave is the Man-at-Legs, an Arachnorb species armed with a laser-guided machine gun. The total value of all the treasure here is × 1480 in the US version and × 1310 in the European version, mainly consisting of treasures from the Industrial Set and Hyper-technology Series.
How to reach
Like the Frontier Cavern, it is impossible to reach this cave before getting Blue Pikmin. Use Blue Pikmin to remove the clog in the first pond and build a bridge over the second. Once this is done, Pikmin of all types can be brought across. Beside the Watery Blowhog that is beyond the clump of enemies is a gate covered by gas pipes, requiring White Pikmin to destroy. The cave is located beyond this gate, up a slope that is challenging for Pikmin to climb. Defeating the Decorated Cannon Beetles, the various Blowhogs and the Cloaking Burrow-Nit is recommended, but not strictly necessary.
No water is found in this cave, so your Pikmin squad should not include Blue Pikmin. The hazards of this dungeon are limited, with more focus being placed on bomb rock explosions, so minimal care needs to be placed on the proportions of the other Pikmin types. There is little reason to include less than 100 Pikmin in your party to take advantage of the Queen Candypop Buds until after all treasures have been collected, unless you elected to bring a small squad of Purple Pikmin. This is because the Queen Candypop Buds are located on sublevel 8, and the only danger following is the Man-At-Legs.
“Interesting... My metal detectors are reacting violently!I can only conclude that there may be some sort of machine below, but that seems illogical...”
The cave starts off with the first sublevel having a snowy cave appearance, much like the other caves in the Valley of Repose. However, this is the only sublevel in this cave to have a snowy theme.
Start by destroying the poison gas pipes and defeating some Bumbling Snitchbugs if they happen to be an annoyance. The Snow Bulborbs and Hairy Bulborbs can then be dealt with, preferably using Purple Pikmin. There are two treasures in this level: the Nouveau Table, which should be buried, and the Exhausted Superstick.
The main focus on this sublevel is on the various bomb-rocks. You should dismiss the Pikmin, and set off all bomb-rocks you can find. The Careening Dirigibugs will be armed by now, but they will not be as troublesome as the bomb-rocks that were on the ground.
The enemies should now be attacked one by one. The Swooping Snitchbug here has a high tendency to throw Pikmin in the gaps that are between the larger expanses. This still doesn't make it as big of a threat as the Dirigibugs, but it still shouldn't be completely ignored. The treasures here are the Spirit Flogger and the Network Mainbrain.
This level has three Armored Cannon Beetle Larvae, along with multiple fire geysers. When fighting the beetles, make sure they aren't facing the void, or else your Pikmin will be tossed into it. Once the threats are cleared, the Ivory Candypop Bud can be used to make White Pikmin if desired. Note that because of the way sublevels are generated, the Ivory Candypop Bud might not appear. Treasures here are the Superstrong Stabilizer, the Omega Flywheel and the Coiled Launcher.
This is a typical rest sublevel. The only objects worth mentioning are eggs, Candypop Buds, and a geyser which can be used to return to the Valley of Repose. There are three Ivory Candypop Buds that can produce White Pikmin.
In this sublevel, it is recommended to first dismiss the Pikmin into the corner behind the Research Pod, and to take a leader around the whole floor and disarm all the bomb rocks and Volatile Dweevils. This is because it's much safer to have them explode while nothing is around, rather than when the Pikmin are busy. Once everything is cleared, Whites should be used to collect the Mystical Disc and the Adamantine Girdle. More Dweevils and bomb-rocks will fall when the Pikmin carry the treasures, so follow them carefully. Note that, although rare, it is possible for a bomb rock to fall near the starting location.
Many enemies spawn close to each other in this level, including Careening Dirigibugs, Dweevils and some Anode Beetles. The enemies spawn in different positions each time, and as such, not much advice can be given, but killing the creatures that are a little off from the groups first is usually a safe tactic. Since electricity is the most dangerous hazard, using Yellow Pikmin is also a good idea. The Dweevils can also be chased near an edge, and chances are they will walk off the side – their treasures will reappear elsewhere. You can also dispose of the Anode Beetles by carrying a couple of Pikmin with you to flip them over, and using cleverly lured Dirigibugs to drop bombs on them and kill them. The treasures available are the Repair Juggernaut, the Vacuum Processor and the Space Wave Receiver.
There is an exit geyser on this sublevel if you need to leave the cave, but there is also a rest stop two sublevels down which can be used to replenish your Pikmin army.
This large sublevel contains Gatling Groinks, one walking about, and the other on a pillar. After you clear the enemies, the Indomitable CPU, the Furious Adhesive and the Thirst Activator need to be collected. One of the treasures may be in a corner, and when this one is picked up, bomb-rocks are likely to fall from the sky. Make sure to be especially cautious collecting treasures here.
A good way to get rid of the walking Gatling Groink is to lure it over a gap which causes it to fall and instantly die. To note is that, due to the way cave sublevels are generated, the stationary Gatling Groink may not appear, and as such, you can miss out on the Indomitable CPU, as detailed here and here.
Another rest level, and in this one, there are two Queen Candypop Buds which can help make up for lost Pikmin. There are also three Violet Candypop Buds for Purple Pikmin, and a geyser to return to the surface.
The final floor of the cave contains the boss, the Man-at-Legs. Initially it appears as an orb in the middle of the arena. Rapidly throwing Pikmin at it before it gets up, preferably Purple Pikmin, will deal a lot of damage to the boss, though not as much in New Play Control! Pikmin 2, as the creature is invincible while it is getting up. Defeat the boss as per the strategy, recover the Stellar Orb, and return to the surface.
Purple Pikmin and White Pikmin farming
The Subterranean Complex is an excellent cave to increase the populations of Purple Pikmin and White Pikmin. On the third sublevel there will be a lone Ivory Candypop Bud. (Should it not be there, resetting the game and reloading the level should make it appear eventually.) The next sublevel contains three Ivory Candypops. On the eighth sublevel there will be three Violet Candypop Buds and two Queen Candypop Buds.
To get large numbers of both types, at least 22 of any Pikmin type other than White or Purple should be brought along into the cave, and used for every Candypop Bud available. If just Purple Pikmin are desired, only 1 Pikmin needs to be brought into the cave, and the player can run to the hole in the first 7 sublevels to reach the eighth, where the Queen Candypop Buds can be used to generate Pikmin for the Violet Candypop Buds. The eggs scattered about this sublevel will provide nectar for the leaf and bud Pikmin. The cave can then be exited via the geyser. This process can be repeated infinitely, as the Candypop Buds are not limited to a certain number of White or Purple Pikmin total.
Names in other languages