No... there is a HUGE city to explore and more things...
just your basic "shoot zombies and don't die" game
Size is irrelevant. This is so basic, it was actually created numerous times on source. 2 times as goldsrc mods (BrainBread and Zombie Panic), 3 times as sourcemods(ZM, BrainBread source[which died], Zombie Panic! Source), 3 times (as far as I know) as Garry's Mod game modes (Zombie Survival, ReDead, Gmod 9 Zombie Survival, ZombieRP [and all variations thereof]) and 2 times as a retail game (L4D and L4D2). I want a zombie game where the idea is SURVIVAL and not SHOOT ZOMBIES LOL.