-Good multiplayer games
-Well optimized and good graphics
-Creative independent games
-Bugless games
and which games they don't buy?
-Cheap and not optimized console ports
-Weak Multiplayer
and I also know most of PC gamers tries the game via torrent then buy it.The question is ; Which games do you buy and why? Which things you wanna know before you buy the game? Which fact is the most important and necessary?