DSOGaming writes: "Ah, the good old Doom. A game that was created by a twelve-man team from Texas. A game from an unknown (at that time) company that was meant to change FPS games forever. We are pretty sure that most of you already know how legendary this game is but did you know that it was the highest usage application in the US when its shareware version was released? Oh yeah, iD’s little gem was installed – and played – to more PC systems and managed to surpass even Microsoft’s OS, Windows."