Xonotic
Open SourceXonotic is a fast-paced, arena-style first-person shooter with a focus on pure competitive gameplay. It is free, open-source, and offers both single-player and robust multiplayer modes with a variety of weapons and game types.
Key Features
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Completely free and open-source with no microtransactions.
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Fast-paced and skill-based arena gameplay.
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Variety of classic and unique game modes.