Open Source Games
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Browse free open source Games and projects for Windows and BSD below. Use the toggles on the left to filter open source Games by OS, license, language, programming language, and project status.
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antimicro
Graphical program to map keyboard and mouse controls to a gamepad
antimicro is a graphical program used to map keyboard keys and mouse controls to a gamepad. It's useful for using a gamepad on PC games that do not have any form of built-in gamepad support. This program can also be used to control any desktop application with a gamepad. On Linux, this means that your system has to be running an X environment in order to run this program. This program currently works with various Linux distributions, Windows (Vista and later), and FreeBSD, but with limited support for FreeBSD and Windows XP. -
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Battle for Wesnoth
A strategy game with a high fantasy theme
The Battle for Wesnoth is a Free, turn-based tactical strategy game with a high fantasy theme, featuring both single-player, and online/hotseat multiplayer combat. Fight a desperate battle to reclaim the throne of Wesnoth, or take hand in any number of other adventures. -
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OpenSource OpenGL Multiplayer Multiplatform Battle Zone capture the Flag. 3D first person tank game. Download the latest version at https://www.bzflag.org/downloads/ Development has moved to Github: https://github.com/BZFlag-Dev/bzflag (The SourceForge binary releases for Windows and macOS are very outdated. Please download the latest version from our website.)
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Stellarium
A planetarium software that shows a 3D simulation of the night sky
Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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FlightGear - Flight Simulator
FlightGear Flight Simulator: free open-source multiplatform flight sim
Founded in 1997, FlightGear is developed by a worldwide group of volunteers, brought together by a shared ambition to create the most realistic flight simulator possible that is free to use, modify and distribute. FlightGear is used all over the world by desktop flight simulator enthusiasts, for research in universities and for interactive exhibits in museums. FlightGear features more than 400 aircraft, a worldwide scenery database, a multi-player environment, detailed sky modelling, a flexible and open aircraft modelling system, varied networking options, multiple display support, a powerful scripting language and an open architecture. Best of all, being open-source, the simulator is owned by the community and everyone is encouraged to contribute. -
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simutrans
A free transportation simulator game
Simutrans is a cross-platform simulation game where players try to successfully manage transportation systems between places by land, air, and water for passengers, mail, and goods. Planes, ships, trains, trams, trucks, buses, or monorails are at your disposal, but factories operate based on contracts and passengers can only travel to their set destinations. -
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Warzone 2100
RTS game with the theme of Strategy by Design
You command the forces of “The Project” in a battle to rebuild the world after mankind has almost been destroyed by nuclear missiles. The game offers a full campaign with optional (but strongly recommended!), videos, battle against four factions, multi-player and single-player skirmish modes, and an extensive tech tree and a full unit designer. Multi-player is also cross-platform, battle your friends with any OS, Windows, Linux or Mac, it all works seamlessly! We also offer 100% portable Windows builds, take the game and install it anywhere! Our source repo is now at https://github.com/Warzone2100/warzone2100 Warzone 2100 works on both 32 & 64 bit Windows 7 or higher, 32 or 64 bit Linux, & macOS 10.14+. -
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LOTRO Companion
A companion for your LOTRO activities
LOTRO Companion is a desktop application. It manages characters of the Lord of the Rings Online (LOTRO) MMORPG. It has 3 main goals: - track the status of one or several characters: current gear, deeds, quests, collections... - simulate gear/virtues, compute result stats and analyze stats contributions - lore database: quests, items, deeds, mounts, pets... Character data is imported from the game client running locally. See https://discord.gg/t2J4GDq See https://www.facebook.com/lotrocompanion/ -
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DeSmuME
DeSmuME is a Nintendo DS emulator
DeSmuME is the most seasoned open source Nintendo DS emulator. It sports tools designed for hackers, speedrunners, youtubers, and casual gamers. Homebrew programs are supported and can even be debugged through GDB. The Windows and OSX versions are both relatively feature rich, and there is a small universe of forks and mods that add even more features for casual gaming. DeSmuME is the origin of RetroArch and OpenEmu Nintendo DS support and is used by several mobile Nintendo DS emulators, with the notable exception of DraStic. DeSmuME's source code is now hosted at https://github.com/TASVideos/desmume/ win32 autobuilds @ https://ci.appveyor.com/project/zeromus/desmume/build/artifacts -
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TV-Browser - A free EPG
Ad free open source TV guide for more than 1000 channels.
TV-Browser is a java-based TV guide which can be easily extended with lots of plugins. It is designed to look like your paper TV guide. -
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Klavaro Touch Typing Tutor
A very efficient tutor.
A touch typing tutor very flexible, supporting customizable keyboard layouts. You can edit and save new or unknown keyboard layouts, as the basic course was designed to not depend on specific ones. Also, there are some charts about the learning process. -
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Universal Pokemon Randomizer ZX
Public repository of source code for the Universal Pokemon Randomizer
Universal Pokemon Randomizer ZX is an open-source tool that allows players to modify and randomize various aspects of Pokémon games across multiple generations, creating unique and unpredictable gameplay experiences. It supports a wide range of ROMs and provides a user-friendly interface for customizing game elements such as Pokémon encounters, abilities, stats, movesets, and item distributions. The tool is designed to maintain game stability while introducing variability, ensuring that randomized versions remain playable and balanced. It also includes advanced options that allow users to control the level of randomness, from subtle changes to complete overhauls of game mechanics. By enabling customization, the project extends the replay value of classic Pokémon titles and encourages experimentation with different strategies. It is widely used by the community for challenge runs, content creation, and personalized gameplay experiences. -
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A port of The Ur-Quan Masters, using SDL, targetted for Linux, all BSD, Windows, MacOS X, and other SDL-supported platforms.
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Scid vs. PC
Chess Database and Toolkit program
"Shane's Chess Information Database" is a huge chess toolkit with extensive database, analysis and chess-playing features. Scid vs. PC is a usability and bug-fix fork of Scid. It has many interface fixes and improvements, and is fully compatible with Scid's .si4 databases. New features include a rewritten Gamelist, Computer Tournament, and FICS, Tree, Book and Graph improvements. -
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Scid is a chess database application (cross-platform, for Unix/Linux and Windows) with many search and database maintenance features.
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Robocode
Robocode is a programming tank game for Java
Robocode is a programming game, where the goal is to develop a robot battle tank to battle against other tanks with Java. The robot battles are running in real-time and on-screen. The motto of Robocode is: Build the best, destroy the rest! -
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3D game engine (more powerful redesign of the Cube engine) and FPS game
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Pokémon Showdown is a Pokémon battle simulator. Play Pokémon battles online! Play with randomly generated teams, or build your own! Fully animated!
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A game engine for running Ultima7 on modern operating systems, plus a map-editor and other tools for creating your own mods and games.
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ZSNES is a SNES/Super Famicom emulator for x86 computers. It runs on Windows, MS-DOS and Linux/FreeBSD and supports mode 7, sound, Super FX, and a lot more.
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PySolFC (PySol Fan Club edition) is an extended version of PySol (a solitaire card games collection).
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Dune 0.97.04 Released for windows. Likely to be some bugs For older version please navigate to 0.96.4 folders. Updated clone of Westood Studios' Dune2 which uses data files from the original game. New features include multiple unit selection/control, high resolution support, multiplayer gaming, improved gui and a selection of new AI's to play against.
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Prodigy Hack
One of the best Prodigy hacks
Prodigy Hack is a browser-based or script-driven modification tool designed to alter gameplay behavior in the Prodigy Math Game by manipulating client-side logic and data handling. It allows users to modify in-game variables such as player stats, currency, progression, and other gameplay elements through injected scripts or browser console commands. The project demonstrates how web-based educational games can be influenced through client-side execution, exposing limitations in input validation and state management. It is typically implemented as a collection of scripts that can be executed in real time while the game is running, enabling immediate changes without modifying server infrastructure. The tool is often used for experimentation, reverse engineering, or demonstrating vulnerabilities in browser-based applications. It also reflects broader concepts in web security, particularly the importance of server-side validation and secure state management. -
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Steam Achievement Manager
A manager for game achievements in Steam
Steam Achievement Manager is a lightweight, portable desktop application designed to give users direct control over achievements and statistics associated with their Steam games. It works by interfacing with the Steam client and APIs, allowing users to unlock, relock, or modify achievements without needing to launch the actual game. The tool provides a simple interface where users can browse their game library, select a title, and view all available achievements in a structured format. Because it operates independently of the game itself, it is often used to recover bugged achievements, reset progress, or manage completion status across different titles. The application requires Steam to be running and the user to be logged in, ensuring that changes are applied directly to the account’s achievement data. Its portability means it can be run without installation, making it convenient for quick use across systems. -
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ChessX
Chess Database and PGN viewer
A free and open source chess database application for Linux, Mac OS X and Windows.
