i played the l4d2 demo and its awesome but its almost the same as the first except melee weapons .. but assassins creed 2 is completely diif. kinda game and way better then the first this time its not repetitive .. im playing it now kick ass game dont buy either game will be tired of it in a month just get game fly people..
I actually plan to buy Left 4 Dead 2 and borrow AC II from a friend. BTW, you did not answer OP. Which is better?