This Land is My Land is a procedurally generated game where you play as a stereotypical "Native American" (who is somehow an amalgam of a bunch of native cultures) and your objective is to kill all the American settlers and free the West. Developed by a Ukrainian studio so it's not exactly culturally in tune with Indians or anything, but if you want your fix of the righteous indigineous dealing out serious damage to some Anglo settlers, it'll hit the spot.