left for dead one, is an adaption of a mod already done for the original half life, valve just took the whole idea and executed it better, oh and put a price tag on it, they did the same exact thing with team fortress, day of defeat and guess what else Counter-fucking_strike that of course if you didnt know that already. come to think of it the only original idea valve came up with in recent years was Portal. i am not saying the rest was bad i am just saying they know how to make games, even when the ideas arent theirs. i didnt play the first l4d on the xbox because i prefer to play shooters on the PC with a mouse that cant pinpoint the head in 0.314 second.
and just to mention halo, i think halo's death-matches are the best fun i ever had. storywise not much, single player definitely not at all ... games can be shit at something and very good at something else, i didnt like fallout but i loved borderlands Why? the same reason i loved Deus Ex and hated Stalker or oblivion or mass effect. its a game that knows how to keep the flow of the game going, look how Bioshock sucked you in the game and how mass effect doesnt, i want to play along a story but i dont want to get bored to death listening to dialogue instead of playing it in game. yaknow what i am saying