Demon-Horde Survival for MORDHAU is a free game utility designed for Windows that enhances the classic gameplay with new features and mechanics. Players must survive four waves of enemies, each lasting 15 minutes, utilizing buyable skill points and team revives to strategize their survival. The game introduces improved Mystery Graves and a modified spawn system, ensuring a more engaging experience while preventing griefing. New weapons are also available in the mystery graves, adding variety to combat strategies.

The game offers an experimental map and several chat commands for players to manage their gameplay effectively. The .dhtoolbox command allows admins to spawn a toolbox for placing blessing statues and revives, while .dhclear can be used to remove these items from the map. With its focus on survival without objectives, Demon-Horde Survival for MORDHAU provides players with a dynamic and challenging environment to test their skills.