Steel Diver: Sub Wars

About

Dive, dive, dive for strategic subaquatic combat! This strategic first-person shooter is the successor to Steel Diver. It features more tactical action game play than typical shooters, as players are asked to navigate heavy-duty submarines while staying one step ahead of their enemies. People can compete in local four-on-four team sub battles and go online to battle submariners from around the world (as long as each person downloads the game for him- or herself).

Source: IGDB