The Seal of Asrahmat is a one-map Halloween campaign for Left 4 Dead 2, made by Imaculata. It includes custom models, sounds, textures and scripting, including an all new enemy. There are optional Jack-o-lanterns that the players can light, along with several new items to collect. This campaign has a few puzzles, so turning on Instructor Hints in the options is highly recommended. Normal diffic...

'Undead Overrun', another singleplayer mutation mod that aims to bring the survival experience to Left 4 Dead. 'All Alone' veterans will be particularly pleased with the challenge this gamemode poses. Mastered the art of sneaking around zombies with melee weapons? Can pull off headshots without looking? Put it all to the test in 'Undead Overrun', a mod that employs the same set of skills as ...