7 open source terminal games for Linux: 
Do fancy graphics really make a game better? Can a text-based game for Linux still keep you entertained?
Don’t get me wrong, I do occasionally enjoy playing a AAA game release from a major studio. But as I’ve gotten older, I’ve found that I really value gameplay (and nostalgia too, admittedly) far more than how photorealistic my gaming experience is.
read more: Opensource.com Jason Baker
Supporting Open Source.
Have you tried: Diving with Sharks?