Im new to Xbox 360.
I hear that generelly there are no CD keys like on PC.
But on some forums i hear people saying "Cant go online, cause the game is bound to xbox live with the cd key".
Im talking about Left 4 Dead 2. I want to buy it as "USED" - Will i 100% be able to play it online ? 2 days i posted and researched and people cant answer me!
would be SO THANKFUL!