well as for games let see.. all quake 3, ureal tournament cl, 3, 4 all run their servers from linux as well as can be played. medal of honor can be played on linux... most games can be played on linux these days but ya not many make games for it. how they play on linux is a program called winex. what makes it so tempting though is the fact that most of the time the operating system is free. it is widely updated and it has so many diffrent shells. programmers find it alot easier to program for linux then windows simply becouse they can make their programs be so intigrated rather then just sit on the surface. this makes the programs run faster. linux servers just use less resources for their own functions and just allow most of the resources to go to whatever they are running. so yes you wont find many of its applications on a store shelf becouse they are updated too often.