Same here, not that much into games,
but I love the graphics.
I tried to install the chess interface that's the default in Trisquel, but
since I couldn't find it without too much hassle, I tried other ones.
For now I settled with the eboard interface (and GnuChess and Stockfish as
engines) because it's very customizable (though I'd also like to modify how
the chess clock looks).
I might try Scid if I get good enough to analyze my games.
But Frankly this might take a while, I'm far from a good player, but I just
love that game.
I'm starting to learn FreeCiv as well.
Looks immensely complicated, but fun,
and it might make me a little less dumb on the way.
And When I'll get my hands on a Wiimote,
I will play a Duck hunt variant (maybe I could try building a "Time crisis"
variant based on the free Doom version),
And Speed Dreams/TORCS which looks real nice, if my machine can handle it.