Zandronum is a multiplayer oriented port, based off Skulltag, for Doom and Doom II by id Software.



Doom is described as 'Science fiction horror-themed first-person shooter video game in which players assume the role of a space marine, popularly known as "Doomguy", who must fight his way through the hordes of invading demons from Hell' and is a popular first-person shooter in the games category. There are more than 50 games similar to Doom for a variety of platforms, including Windows, Linux, Mac, Steam and Playstation apps. The best Doom alternative is Half-Life. It's not free, so if you're looking for a free alternative, you could try Xonotic or AssaultCube. Other Doom like games are Quake, Fallout, Borderlands and Prodeus.
Zandronum is a multiplayer oriented port, based off Skulltag, for Doom and Doom II by id Software.



OpenArena is a community-produced deathmatch FPS based on GPL idTech3 technology. There are many game types supported including Free For All, Capture The Flag, Domination, Overload, Harvester, and more. There are 17 unique player models to choose from and 12 weapons.



Freedoom is a WIP a complete free content game based on the Doom engine. It's not an engine, but it's replacement game data with entirely original content, Compatible with a majority of game mods made for Doom. Comes in Three Flavors~.




Project Warlock is a first person shooter that fans of Doom, Hexen and Wolfenstein cannot miss. It serves you an exploding cocktail of bullets, spells and monsters.




Battle through an onslaught of mystical backwater cultists, possessed militants & even darker forces as you attempt to discover just what lurks beneath the Earth in this retro FPS inspired by the '90s legends.




Dead Space is a survival horror third-person shooter video game for Microsoft Windows, PlayStation 3 and Xbox 360.




Developed by id® Software, the creators of DOOM® and QUAKE®, RAGE is a groundbreaking first-person shooter set in the not-too-distant future after an asteroid impacts Earth, leaving a ravaged world behind.




Aliens vs. Predator is a science fiction first-person shooter video game, developed by Rebellion Developments

Hard Reset is modeled on "old school" video games such as Quake and Unreal, which results in more straightforward gameplay than most modern first-person shooters. The various stages have secret areas with hidden pick ups such as health and ammunition.




Prey casts players aboard space station Talos I in the midst of an experiment gone awry. The station is overrun by hostile aliens and players must survive using mind-bending powers and weaponry as the fate of humanity is at hand.




Humanity's last safe city has fallen to an overwhelming invasion force, led by Ghaul, the imposing commander of the brutal Red Legion. He has stripped the city's Guardians of their power, and forced the survivors to flee.




Alien Swarm is a free top-down shoot-em-up video game by Valve Corporation. It is a remake of the Alien Swarm mod for Unreal Tournament 2004, and it was developed by the original team, which was hired by Valve during the course of the development process.



Is DOOM but 999999999999999x better and modern. (Including multiplayer)