Free indie games. Some are old, but tough shit. Enjoy.
Combat Arms - not really indie, but it's free. Don't download unless you're in the US/Canada - Europeans like me will get Error code = PI,30022.
Golf? - quality golf game where you whack golf balls and drive around in a golf cart. Very cool wireframe visual style.
Cave Story - the most epic 2D indie game ever created. Insanely well made with some cool weapons.
Battle for Wesnoth - turn-based strategy game with a fantasy theme.
The Endless Forest - a multiplayer online game. No violence. Gets boring after 5 minutes.