I have lots of games on Ubuntu. I currently have more than 20GB games. Most of them are humbe indie bundle. Others are quake3, enemy territory, mars, openarena, postal, sauerbraten, serious sam 1 and 2, Neverwinter Nights, Heroes 3, Descent, ScummVM games (best are broken sword 1 and 2), vdrift, torcs, Unreal Tournament 2004 (best), alienarena, Nexuiz, Xonotic, minecraft, smc, lots of nintendo games (like mario), duckhunt, some flash games, angry bird (chrome version) and many free games from software center. All of these games are native Linux games (built specially for Linux). Currently I am only playing one game. If I happen to complete all these games, I will be playing till I get married and have children and they get old. People say Linux lacks games. Yes, Linux might lack many modern games, but companies have created enough games even for die hard gamers who want to play games while using their Linux OS. If game companies see this as an oppertunity and go for multiplatform (mac, linux) games rather than targeting particular platform, they will only benefit not lose.