Half-Life (Series)

Commercial

Half-Life is a series of first-person shooter video games that share a single science fiction alternate history.

Xonotic

Open Source

Xonotic is a free and open-source first-person shooter video game.

OpenArena

Open Source

OpenArena is a free and open-source video game, it is first-person shooter (FPS) and a video game clone of Quake III Arena.

AssaultCube

Open Source

AssaultCube (ActionCube) is a free and open source software first-person shooter video game.

The Lord of the Rings Online

Freemium

The Lord of the Rings Online is a massively multiplayer online role-playing game (MMORPG) for Microsoft Windows and OS X.

Tremulous

Open Source

Tremulous is a free and open source team-based first-person shooter with real-time strategy elements.

Quake (series)

Commercial

Quake is a series of first-person shooter video games, starting with the game of the same name.

Borderlands (Series)

Commercial

Borderlands is a series of action role-playing first-person shooter video games in a space western/science fantasy setting.

Alien Swarm

Free

Alien Swarm is a freeware multiplayer top-down shooter video game.

Mafia (Series)

Commercial

Mafia is a series of action-adventure video games that are set in fictional locales modeled after American cities, and usually take place in a historical sett…

Dead Space (Series)

Commercial

Dead Space is a series of horror games.

Alien Arena

Open Source

Alien Arena is a fast, free FPS deathmatch game.

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Half-Life (Series) vs Doom (Series)

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Quake (series) vs Doom (Series)

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Xonotic vs Doom (Series)

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Borderlands (Series) vs Doom (Series)

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OpenArena vs Doom (Series)

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Alien Swarm vs Doom (Series)

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AssaultCube vs Doom (Series)

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Mafia (Series) vs Doom (Series)

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The Lord of the Rings Online vs Doom (Series)

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Dead Space (Series) vs Doom (Series)

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Tremulous vs Doom (Series)

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Alien Arena vs Doom (Series)

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Doom (Series) Alternatives

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