Open Source Counter-Strike Alternatives

The best open source alternative to Counter-Strike is Unreal Tournament. If that doesn't suit you, our users have ranked more than 50 alternatives to Counter-Strike and 12 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Counter-Strike are Cube 2: Sauerbraten, AssaultCube, Enemy Territory: Legacy and Nexuiz Classic.

Counter-Strike alternatives are mainly First-Person Shooters but may also be Battle Royale Games or Open World Games. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Counter-Strike.

Counter-Strike alternatives page was last updated

Counter-Strike

136

Freemium • Proprietary
First-Person Shooter

Counter-Strike (CS) is a series of multiplayer first-person shooter video games, in which teams of terrorists battle to...

More about Counter-Strike

Unreal Tournament (Series)
Is this is a good alternative?
Yes
No
Free • Open Source
First-Person Shooter
Mac
Windows
Linux
43 Unreal Tournament alternatives
Unreal is a series of first-person shooter video games developed by Epic Games.
Represent entire series of Unreal Tournament games.
- - Unreal Tournament is the most popular Windows, Mac & Linux alternative to Counter-Strike.
- - Unreal Tournament is the most popular Open Source & free alternative to Counter-Strike.
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Unreal Tournament Features
1. Player vs PlayerYou can compete against other real players in Unreal Tournament.
2. MultiplayerUnreal Tournament offers a game mode for more than one player.
3. ModdableUnreal Tournament can be modified through the installation of external mods.
4. Single playerUnreal Tournament has one or more single player game modes.
5. Online co-opYou can team-up with two or more players over the internet in Unreal Tournament to play cooperatively.
Offline mode
Comments about Unreal Tournament as a Alternative to Counter-Strike
Most users think Unreal Tournament is a great Counter-Strike alternative.
Guest
Counter-Strike is a tactical online shooter. UT is a fast paced arena shooter. Completely different gameplay styles.
Negative comment•
3
Cube 2: Sauerbraten
Is this is a good alternative?
Yes
No
Free • Open Source
First-Person Shooter
Mac
Windows
Linux
BSD
46 Cube 2: Sauerbraten alternatives
Cube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS.
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Cube 2: Sauerbraten Features
1. MultiplayerCube 2: Sauerbraten offers a game mode for more than one player.
2. Player vs PlayerYou can compete against other real players in Cube 2: Sauerbraten.
3. ModdableCube 2: Sauerbraten can be modified through the installation of external mods.
4. Online co-opYou can team-up with two or more players over the internet in Cube 2: Sauerbraten to play cooperatively.
5. Single playerCube 2: Sauerbraten has one or more single player game modes.
6. PortableCube 2: Sauerbraten can be used from a USB stick or similar with no prior installation.
Fast motion
Opinions about Cube 2: Sauerbraten as a Alternative to Counter-Strike
Some users think Cube 2: Sauerbraten is a great Counter-Strike alternative, some don't.
AssaultCube
Is this is a good alternative?
Yes
No
Free • Open Source
First-Person Shooter
Mac
Windows
Linux
PortableApps.com
63 AssaultCube alternatives
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!
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AssaultCube Features
1. Player vs PlayerYou can compete against other real players in AssaultCube.
2. ModdableAssaultCube can be modified through the installation of external mods.
3. Single playerAssaultCube has one or more single player game modes.
4. MultiplayerAssaultCube offers a game mode for more than one player.
5. PortableAssaultCube can be used from a USB stick or similar with no prior installation.
Comments about AssaultCube as a Alternative to Counter-Strike
Most users think AssaultCube is a great Counter-Strike alternative.
Guest
it's like csgo (NOT the "de" mode) but it's f-p (fast-paced) and soooooooo cool
Positive comment•
1

Guest
cool game + freesoftware
Positive comment•
0
Enemy Territory: Legacy
Is this is a good alternative?
Yes
No
Free • Open Source
First-Person Shooter
Mac
Windows
Linux
23 Enemy Territory: Legacy alternatives
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...
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Enemy Territory: Legacy Features
1. ModdableEnemy Territory: Legacy can be modified through the installation of external mods.
2. Player vs PlayerYou can compete against other real players in Enemy Territory: Legacy.
3. MultiplayerEnemy Territory: Legacy offers a game mode for more than one player.
First person view
Class-based
Objective based
Add a screenshot

Comments about Enemy Territory: Legacy as a Alternative to Counter-Strike
pros, cons and recent comments
rattbag
Fantastic predecessor to CS, kept alive by the community. The class based combat keeps the game fresh.
Positive comment•
1
Nexuiz Classic
Is this is a good alternative?
Yes
No
Free • Open Source
First-Person Shooter
Mac
Windows
Linux
21 Nexuiz Classic alternatives
Nexuiz was originally developed by Lee Vermeulen and Forest ‘LordHavoc’ Hale, who started Alientrap in the summer of 2002. The goal of the project was to create a high quality first person shooter that could be played freely across all platforms in one package: PC, Mac, and...
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Nexuiz Classic Features
1. Real time collaborationMultiple users can work together in Nexuiz Classic simultaneously.
Discontinued
Nexuiz is no longer developed. It's successor is Xonotic , but last version of Nexuiz Classic, 2.5.2, released in 2009, can be still downloaded from the official website.
AssaultCube Reloaded
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Yes
No
Free • Open Source
Windows
Linux
6 AssaultCube Reloaded alternatives
A free-and-open-source first-person-shooter aimed at improving the classic game, AssaultCube!
AssaultCube Reloaded has no features, suggest some!

Opinions about AssaultCube Reloaded as a Alternative to Counter-Strike
Most users think AssaultCube Reloaded is a great Counter-Strike alternative.
Alien Arena
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Yes
No
Free • Open Source
First-Person Shooter
Mac
Windows
Linux
BSD
33 Alien Arena alternatives
Alien Arena is a free and opensource first-person shooter game that combines a 1950s-era sci-fi atmosphere with gameplay similar to Quake , Doom and .
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Alien Arena Features
1. MultiplayerAlien Arena offers a game mode for more than one player.
Sci-fi
Discontinued
The last update was released on September 6th, 2013.
Tremulous
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Yes
No
Free • Open Source
First-Person Shooter
Mac
Windows
Linux
30 Tremulous alternatives
Tremulous is a free, open source game that blends a team based FPS with elements of an RTS. Players can choose from 2 unique races, aliens and humans. Players on both teams are able to build working structures in-game like an RTS.
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Tremulous Features
Base building
Assymetical multiplayer
Discontinued
The project is no longer developed. Last version, 1.2 Beta, released in December 2009, can be still downloaded from the official website. The project has been forked by Unvanquished
Digital Paint: Paintball 2
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Yes
No
Free • Open Source
First-Person Shooter
Windows
Linux
36 Digital Paint: Paintball 2 alternatives
Digital Paint: Paintball 2 is a Paintball game that started out as a mod for quake 2 but then took on a life of its own as an open source fps game with a global player and clan management system.
Digital Paint: Paintball 2 has no features, suggest some!
Jake2
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
Online
21 Jake2 alternatives
Jake2 is a Java 3D game engine. It is a port of the GPL’d Quake2 game engine from id Software. To use the Jake2 engine you need either the data files from the original game or from the demo version that is available for download from ftp://ftp.idsoftware.com.
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Jake2 Features
OPENGL
Discontinued
Abandonned since 2006 : http://bytonic.de