Left4Dead 2

Left4Dead 2 simply tops L4D with more explosive content making its predecessor look pale in comparison. New campaigns, game modes, guns, all-new melee weapons makes this a complete Zombie Apocalypse experience from both perspectives. The Realism mode adds a whole lot of tension which wasn't missed anyways. Left4Dead 2 is made for fans of all things Zombie related, it's incredibly gory, zombie animations are well executed, scary monsters, but the main feature in L4D 2 are the melee weapons, you'll have chainsaws, electric guitars, cricket bats and more at your disposal to get the Zombies out of your way.