Barotrauma is a very chaotic game where you pilot a submarine on the moon of Europa. While most of the time it isn't too terribly exiting, things can get very crazy, very fast.

Some notable things that, should this be implemented, are Deaths, any time the Sub is exited, whenever the Sub is breached, whenever the sub is under attack, whenever a creature has entered the Sub, and whenever the submarine docks with a station.

Like I said, this is a very Low-intensity game, but the action can pick up real quick.