Open Source Call of Duty (Series) AlternativesFirst-Person Shooters and other similar apps like Call of Duty (Series)

The best open source alternative to Call of Duty is AssaultCube. If that doesn't suit you, our users have ranked more than 50 alternatives to Call of Duty and six of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Call of Duty are Cube 2: Sauerbraten, Touhou Project, ET: Legacy and Liblast.

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Call of Duty alternatives are mainly First-Person Shooters, but if you're looking for Action Games you can filter on that. Other popular filters include Free, Open Source, Android and Linux. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Call of Duty.
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Alternatives
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Alternatives list

  1. AssaultCube icon

    AssaultCube

     39 likes

    AssaultCube is a free, multiplayer, first-person shooter game, based on the CUBE engine.

    Taking place in realistic environments, with fast, arcade gameplay, it's addictive and fun!

    Cost / License

    • Free
    • Open Source (Zlib)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • PortableApps.com
    • GB flagUnited Kingdom
    A player accidentally blowing himself up with his own grenade.
    Good alternative?
     
  2. Cube 2: Sauerbraten icon

    Cube 2: Sauerbraten

     51 likes

    Cube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    Cube 2: Sauerbraten screenshot 1
    Good alternative?
     
  5. ET: Legacy icon

    ET: Legacy

     8 likes

    Wolfenstein: Enemy Territory is a free multiplayer first-person shooter. Set during World War II and heavily focused on team work, it was initially released in 2003 by Splash Damage and id Software. More than a decade after its release, after spending countless hours of...

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Global
    ET: Legacy screenshot 1
    Good alternative?
     
  6. Liblast icon

    Liblast

     1 like

    A Libre Multiplayer FPS Game built with Godot game engine and a fully FOSS toolchain.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Windows
    • Linux
    Liblast screenshot 1
    Good alternative?
     
  8. Tuxocide icon

    Tuxocide

     Like

    A war rages on in Antarctica between penguins and hostile aliens….

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Linux
    • Snapcraft
    • Flathub
    • GB flagUnited Kingdom
    Tuxocide screenshot 1
    Good alternative?
     
6 of 6 Call of Duty alternatives