CrossFire is described as 'Cross Fire is a free online first-person shooter featuring persistent rankings and five game modes – including the exclusive stealth-action Ghost Mode' and is a First-Person Shooter in the Games category. There are more than 50 games similar to CrossFire for a variety of platforms, including Windows, Linux, Mac, Steam and Playstation. The best alternative is Xonotic, which is both free and Open Source. Other CrossFire like games are Team Fortress 2 (Freemium), Counter-Strike (Freemium), Unreal Tournament (Free, Open Source) and Doom (Paid).
Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux. The project is geared towards providing addictive arena shooter gameplay which is all spawned and driven by the community itself.
Team Fortress 2 (TF2) is the sequel to the game that put class-based, multiplayer team warfare on the map. One of the most popular online action games of all time, TF2 delivers constant free updates including new game modes, maps, equipment and, most importantly, hats.
Counter-Strike (CS) is a series of multiplayer first-person shooter video games, in which teams of terrorists battle to perpetrate an act of terror (bombing, hostage-taking, assassination) and counter-terrorists try to prevent it (bomb defusal, hostage rescue).
Doom is a 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. Represent entire series of Doom games including Doom , Doom II: Hell on Earth, Final Doom, Doom 64, Doom 3, Doom (2016), Doom Eternal.
Battlefield is a series of first-person shooter video games that started out on Microsoft Windows and OS X with its debut video game, Battlefield 1942, which was released in 2002. Represent entire series of Battlefield games.
Borderlands is a first-person shooter mixed with role-playing game (experience, specializations) that takes you to a mysterious planet, looking like a futuristic Wild West. Represent entire series of Borderlands games.
Red Eclipse is a fun-filled new take on the first person arena shooter, built as a total conversion of Cube Engine 2, which lends itself toward a balanced gameplay, with a general theme of agility in a variety of environments.