Browse free open source Multiplayer games and projects for Windows below. Use the toggles on the left to filter open source Multiplayer games by OS, license, language, programming language, and project status.

  • Auth0 for AI Agents now in GA Icon
    Auth0 for AI Agents now in GA

    Ready to implement AI with confidence (without sacrificing security)?

    Connect your AI agents to apps and data more securely, give users control over the actions AI agents can perform and the data they can access, and enable human confirmation for critical agent actions.
    Start building today
  • Leverage AI to Automate Medical Coding Icon
    Leverage AI to Automate Medical Coding

    Medical Coding Solution

    As a healthcare provider, you should be paid promptly for the services you provide to patients. Slow, inefficient, and error-prone manual coding keeps you from the financial peace you deserve. XpertDox’s autonomous coding solution accelerates the revenue cycle so you can focus on providing great healthcare.
    Learn More
  • 1
    Fast 2d tank arcade game with multiplayer and split-screen modes.
    Downloads: 15 This Week
    Last Update:
    See Project
  • 2
    M.A.R.S. - a ridiculous Shooter
    This is a first attempt to create a game in OpenGL with SFML. It is a game for two players, flying with ships in a two-dimensional space setting, governed by the laws of gravity. There are several game modes and a lot of weapons.
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    Downloads: 3 This Week
    Last Update:
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  • 3
    AllTheHaxx

    AllTheHaxx

    Alternative Teeworlds Client with many exciting features!

    A modified client for the open source online multiplayer game Teeworlds, featuring a Lua API. Other highlights include smooth UI design, an identity management system, A* path finding for race maps and a great customizability.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 4
    Quantum Rush

    Quantum Rush

    Quantum Rush is an competitive, futuristic online racing game

    Quantum Rush is an action packed, competitive, futuristic online racing game. Exciting race tracks, diverse weapon systems, technology research and extensive racer customization options are only some of the many features this game will offer when released. Up to 20 players will be competing against each other in every race!
    Downloads: 6 This Week
    Last Update:
    See Project
  • Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight Icon
    Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight

    Lock Down Any Resource, Anywhere, Anytime

    CLEAR by Quantum Knight is a FIPS-140-3 validated encryption SDK engineered for enterprises requiring top-tier security. Offering robust post-quantum cryptography, CLEAR secures files, streaming media, databases, and networks with ease across over 30 modern platforms. Its compact design, smaller than a single smartphone image, ensures maximum efficiency and low energy consumption.
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  • 5
    Polywar is a 2D top-down multiplayer online shooting game - with polygons!
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    Galaxy Forces V2

    Galaxy Forces V2

    A 2D multiplayer space shooter game

    A 2D multiplayer space shooter, inspired by the Amiga classic Gravity Force. Play race, mission or dogfight. Single player, with friends or against AI. There are 50+ levels and a map-editor included. Global hi-score and achievements with replays on the website. The game plays on Windows, Linux and Mac.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 7
    A 2D game inspired by Gravity Power, Star Control and Super Smash Bros. Features include 4-player split-screen action, enemy AI to play missing players, 15 ships, 9 levels and plenty of fun blowing up the level and the other players to smithereens!
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    PK Rhythm

    PK Rhythm

    A game about hitting the beats of a song.

    PK Rhythm is a rhythm game based on Mother 3's battle combo system. Time your beats to the tempo and try to get 16-hit combos! It's still under development, but feel free to check it out.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 9
    Official map editor for the multiplayer online game Subspace/Continuum. http://getcontinuum.com/
    Downloads: 1 This Week
    Last Update:
    See Project
  • Field Service+ for MS Dynamics 365 & Salesforce Icon
    Field Service+ for MS Dynamics 365 & Salesforce

    Empower your field service with mobility and reliability

    Resco’s mobile solution streamlines your field service operations with offline work, fast data sync, and powerful tools for frontline workers, all natively integrated into Dynamics 365 and Salesforce.
    Learn More
  • 10
    Atom by Zachary Wormleighton

    Atom by Zachary Wormleighton

    A small, extremely addictive, arcade-style game.

    ATOM by Zachary Wormleighton Story: The game pitts you, the player, in a futile battle against a host of angry ions. You are the almighty atom with 111 electrons - but, you're extremely unstable. You must fire electrons at the enemy to destroy the Helium-2 atoms and steal their electrons trying to survive in the nuclear prison you're in. Objective: You must try and survive as long as you can in the arena-area and rack up as many points as possible. You will be given collectable upgrades throughout the gameplay and will encounter a number of enemies that spawn, trying to reduce you to mear sub-atomic particles in a thermo-nuclear fission that will blow your mind! Enjoy! Controls: W - To move upwards S - To move downwards A - To move to the left D - To move to the right P - To pause the game Mouse - To aim Left Mouse Button - To fire Esc - To exit the game (Also, you can use F9 to take a screenshot of the game.) WARNING: ATOMS NOT TO SCALE.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Bedroom battle tanks is a JGame based 2D tank shooter created as an entry for a game development competition.
    Downloads: 0 This Week
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  • 12
    NOTE THAT THIS PROJECT HAS MOVED TO GOOGLE CODE https://code.google.com/p/bitfighter/ Bitfighter is a really fun (!) multiplayer shoot-em-up with customizable ships and Robotron-like controls. Solid networking for great Internet playability.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    CYPHER

    CYPHER

    The Free Online Multiplayer Hacking Platform Shooter

    Welcome to CYPHER. A corrupt government controls Mars as corporations sell oxygen at a premium. You are an agent with an incredible skill set determined to eliminate the system. Taking information is how you will do it; unfortunately, other organizations are seeking what you are. They will stop at nothing to steal the valuable data you hack... The plot of CYPHER is the overthrow of the tyrannical Martian government. In the not-too-distant future, colonization of Mars has been completed and the new government is being influenced by evil corporations. These organizations are rife with corruption and greed. The populace seems to not notice or care, lulled into a false sense of complacency by the media as their freedoms are stripped from them. From the darkness, a collection of underground computer hackers emerges to find valuable secret information which can lead to the downfall of the destructive forces that have taken over the planet. YOU are one such hacker.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Dead Boys (a game)

    Dead Boys (a game)

    A 2d action shooter game. Split screen for up to 4 players.

    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    FLAW
    FLAW is a free top-down wizard battle game. It can be played by up to 5 players simultaneously. The goal of the game is to survive as long as possible while more and more fireballs appear in the arena. Gameplay is simple and self-explanatory. The desktop version is available on Windows and Linux - an Android port of has been made by David Lee Evans (https://github.com/DavidLeeEvans/FLAW) The game and all of its assets are licensed under the GNU General Public License Version 3 and may be modified, copied and redistributed under the terms of this license.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16

    FU-18-newsuperyoshi

    Fly, bomb, shoot sh*t.

    FU-18 is an open source, micro-transactioned arcade style game. If you would like to join the project, shoot me an email at newsuperyoshi@icloud.com and I'll get back to you.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Fliegerass is a 2D side-scroller arcade game. The player controls a WWII airplane in single- and multi-player battles.
    Downloads: 0 This Week
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    See Project
  • 18
    Mod-friendly framework for the creation of 3D-rendered, two-dimensional fighting games. Default character-set features open source mascots (e.g. Tux). A cross-platform Super Smash Bros. clone.
    Downloads: 0 This Week
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    See Project
  • 19

    Gravity Force X

    Expanded remake of 1994 Amiga game "Gravity Force 2".

    A remake of 1994 Amiga game "Gravity Force 2" (GF2), a two player, realtime versus game crossing the destructible bitmap level of "Worms" with the flight mechanics of "Thrust". The core mechanics and appearance of this game is intended to be faithful to GF2. Some expansions have been made over the original, made possible by modern computing power, such as increasing the number of projectiles, higher definition graphics. Programmed in Dark Basic Pro. Requires Windows with DirectX 9c (can install in parallel with higher DirectX )
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    This is a Python based mini-game framework that supports the Wii Remote as primary input. It employs PyGame, PyOpenGL, PyBluez, and a Python port of Wiigee.
    Downloads: 0 This Week
    Last Update:
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  • 21

    Jetpax

    Re-imagining of Jetpac with online multiplayer

    An expansion of the basic gameplay of the classic game Jetpac. Featuring physics driven enemies and objects, and online multiplayer powered by Unity's matchmaking service. Full source available at: https://github.com/zacharydwaller/Jetpax
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Project "keenly" (working title) aims to become a multiplayer network shooter that looks like some good old low resolution jump & run game from the former DOS area.
    Downloads: 0 This Week
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    See Project
  • 23
    LinkSphere is being developed using the the Open Toolkit Libary (OpenTK) as an Open-Source RTS/Shmup/music-game, inspired by Darwinia, Gate 88 and Rez.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    A open-source reimplementation of the Amiga game called "Roketz". It was both a Shoot-em-up and a racing game, against gravity.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    OpenJazz is an open-source version of the classic Jazz Jackrabbit™ games. OpenJazz is available for a wide range of platforms, including Windows, Mac OS X, and several gaming devices. To play, you will need the files from one of the original games.
    Downloads: 0 This Week
    Last Update:
    See Project
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