new skins for the same gamde dosent make a new game,I'd Realy don't have to continu this because it might get into a l4d 2 hathing thread
It's not like Madden or some BS like that, I agree with you on those kinds of games. But L4D2 includes all you need to call it a sequel.
New characters, new maps, new locations.
Several new weapons and ammo types to spice up how you kill zombies.
Melee weapons, for when you'd rather bludgeon a swarm of the horde with an axe than merely push them away with the butt of your gun. Imagine this for freeing people from Hunters. Remove a step from the "melee, shoot" equation.
Daytime levels, for a wildly different mood with certain gameplay tweaks. For instance, the Witch will roam freely during the Day because of all that light.
And the new Special Infected. The Charger, which is like a mini Tank. The Jockey, who can Pounce Survivors and STEER them into danger. The Spitter, a nasty looking ***** who can vomit acid which makes areas inaccessible temporarily, possibly trapping Survivors, or dealing tons of damage to ones who get caught in the puddle.
And then there's all the game fixes and improved dismemberment physics and the uncommon infected types. It's really all you can ask for from a sequel game. I mean, what else might you add?