Features ･Cross-platform multiplayer ･Proximity voice chat ･A randomized, labyrinthine underground hospital (with some… unexpected facilities) ･Swarming sexy-nurse monsters ･A relentless pursuer unleashed as time ticks down ･Recover test-subject capsules from the facility ･Exchange rewards for random items (a.k.a. gacha) ･Linked transport system for high-speed hauling with multiple players ･Unlockable and customizable uniforms & auras ･Carry useful items to the next floor ･Total wipe = total loss Will you uncover the hidden truth buried deep beneath UNDERWARD?