Ok, so I got a new super whizzy PC. Ever since then, my brother has been badgering me to try out some Windows games on it to show what it's capable of.
So he lent me Bioshock and Portal. Both my cup 'o' tea.
Normally I keep gameplay to a PS2 (or sometimes PS1, DS, Gamecube or on rare occasions the Wii). I don't like mouse control on games. I prefer a controller.
So I installed Bioshock... and got "enter passcode or apply for one". So I ditched that. My brother neglected to include it.
Next I installed Portal. Or tried to. Steam registered a duplicate on my account and the game serial number. So I ditched that too.
That's the reason I do linux. None of this serial number crap. It seriously p's me off.