Shadow Warrior (Reboot) is described as 'Shadow Warrior is a series of first-person shooter video games that focuses on the exploits of Lo Wang, a modern ninja warrior who fights through hordes of demons' and is a first-person shooter in the games category. There are more than 50 games similar to Shadow Warrior (Reboot) for a variety of platforms, including Windows, Linux, Mac, Steam and Xbox apps. The best Shadow Warrior (Reboot) alternative is Half-Life. It's not free, so if you're looking for a free alternative, you could try Xonotic or AssaultCube. Other Shadow Warrior (Reboot) like games are Fallout, Quake, Cyberpunk 2077 and Doom.
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~.
The game is inspired by such classic titles as Quake and Doom, with the emphasis on killing large numbers of monsters. The game is divided into five chapters, each about five levels long. The player's objective is to get through each level, from start to finish, by...
Poland
EU
Tremulous is a free, open source game that blends a team based FPS with elements of an RTS. Players can choose from 2 unique races, aliens and humans. Players on both teams are able to build working structures in-game like an RTS.
United States
CzechiaEU
Digital Paint: Paintball 2 is a Paintball game that started out as a mod for quake 2 but then took on a life of its own as an open source fps game with a global player and clan management system.
United States
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.
United States
Zandronum is a multiplayer oriented port, based off Skulltag, for Doom and Doom II by id Software.
Free online shooter featuring multiple game modes, customizable weapons, numerous maps, both PvP and PvE gameplay, clan wars, and regular updates. Offers character personalization, dynamic events, leaderboards, and fast-paced, tactical multiplayer combat.
South Korea
Aliens vs. Predator is a science fiction first-person shooter video game, developed by Rebellion Developments
Japan
1998 saw the public release of the Doom source code by its original authors, id Software. Since then, a large number of Doom "source ports" have been created by programmers, who have extended the code, adding new features and removing some of the limitations of DOS...
Dead Meets Lead is every bit and piece of what a challenging zombie-slaying action game should be. Enter the role of the 18th century commander who’s on a mission to obliterate evil, by fighting your way through the island of El Mirando.
SwedenEU
