The best open source alternative to Call of Duty is Unreal Tournament, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Call of Duty and three 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 (Free, Open Source) and Enemy Territory: Legacy (Free, Open Source).
Unreal is a series of first-person shooter video games developed by Epic Games. Represent entire series of Unreal Tournament games.
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Unreal Tournament vs Call of Duty opinions
This alternative is disputed. Unreal Tournament is still a legitimate alternative to Call of Duty, but it might have issues that some users think are important.
Unreal is more of an arena shooter with a focus on map/powerup control. As apposed to Call of Duty which is based around lone wolf "rambo like" combat with an emphasis on player-controlled weapon sets and customization.
Negative comment • almost 3 years ago
Unreal Tournament is arena shooter, Call of duty is more realistic shooter.