Apparently the people behind the game Descent have come up with a version of the game for now:
'Descent' Creators Reunite For a New Game Called 'Overload' - Slashdot
The sad thing is that while this computer is adequate in every way for what I need right now, I don't think it could handle something like that.
But it's not like I'm going to not try to do that anyway.
Here's the trailer video if you want to watch: