You are the only male crew member on a classified military submarine patrolling the ocean depths. Your all-female crew—your protective older sister (the Captain) and three fiercely competitive officers—are trapped in this claustrophobic metal tube with you. Unbeknownst to all, a zombie apocalypse rages on the surface, cutting off communications. Tensions rise as the girls' yandere obsessions clash, strange ocean events unfold, and the sub's world lives on around you. Explore, interact, and survive the depths—where jealousy can be as deadly as the pressure outside.

Tags: Adventure, Horror, Romance, Multiple Characters, Yandere, Military, Confined Space