
IGN writes:
"Believe us, we could write all day about Left 4 Dead and Left 4 Dead 2, and we have. Whether it was our huge E3 preview of L4D2 or our recent look at some of the new user-made maps for L4D. Valve's zombie franchise is a lot of fun to play.
But we're also aware that there's a lot of curiousity about Left 4 Dead 2 because much about the game has yet to be revealed. So we've condensed down a quick comparison chart to highlight the differences in the two games."

Following Left 4 Dead's undying legacy, the developer of the game shares that a new likewise project is in the works.
L4D had potential to be so much more. The issue was that the release of the second game just one year after the first added a decent amount of content which was much needed, then there was nothing except for a few small content updates spread far between.
This is one of the only games I can think of that benefits from a yearly release, or at least a yearly DLC so it doesn't split the player base.
The games just got too samey and lack content.. it's a shame they didn't keep up the pace, I know you can download new maps but it doesn't change the overall game or add new enemies etc.

The Guide Hall explores the top horde shooters that co-op fans should be playing this year before the upcoming launch of Warhammer 40,000: Space Marine 2!

Huzaifa from eXputer: "2008 was home to the likes of Call of Duty: World at War, Dead Space, GTA 4, Far Cry 2, Left 4 Dead, and many other hits, which is outright remarkable."
Just about every year in the 7th generation was great and something we most likely won't experience again.
2009 for example had Assassin's Creed 2, Batman: Arkham Asylum, Dragon Age: Origins, Uncharted 2, Halo 3: ODST, Killzone 2, Borderlands, Bayonetta, and Demon's Souls to name a few.
*coughs*
um...still sounds like a sequel....
:)
They forgot to add:
Left4Dead: 5-years-old engine.
Left4Dead 2: the same 5-years-old engine.
And that's the main reason whiners complained about Left4Dead not being a sequel, Valve didn't even make the effort to evolve just a bit. You still have the feeling to play Half-Life 2, Source Engine is seriously getting old.
They also forgot that there are 3-4 new infected types.
1!=2