Sunken is a game about building and managing a deep sea research laboratory. It draws influence from Dwarf Fortress, X-COM, Spacebase DF-9, and other sim/management-focused games. In Sunken, the primary enemy is the environment itself, miles below the surface of the sea, where any slight failure could cause the death of the whole colony.
Demonstration of the water flood mechanic, and how it interacts with the doors in-game. Click "view original" to see animation.