Open Source Games
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Games
Browse free open source Games and projects for Mac and MS-DOS 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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Hexen II: Hammer of Thyrion
A cross-platform port of Hexen II game.
Hammer of Thyrion (uHexen2) is a cross-platform port of Raven Software's Hexen II source. It is based on an older linux port, Anvil of Thyrion. HoT includes countless bug fixes, improved music, sound and video modes, opengl improvements, support for many operating systems and architectures, and documentation among many others. -
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RetroArch
RetroArch is a frontend for emulators, game engines and media players.
RetroArch is a way to run classic games on a wide assortment of Operating Systems and Consoles. Support the Developers on their Patron! https://www.patreon.com/libretro -
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A MAME and MESS port with an advanced video support for Arcade Monitors, TVs, and PC Monitors. It also contains a bootable Linux LiveCD/USB, a frontend with animated MNG/MP3 snapshots, a rom manager, and recompression utilities for compressed files.
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belofte chess
A promising chess program
A console/text based chess program with XBoard/CECP and UCI API, available on all major platforms. You may need a graphical chess interface to use it. Please refer to README.md in the files section for installation instructions. The last stable release is 2.1.9 and has been released on 19/08/2025. Belofte 0.2.0 till 0.9.20 (c/c++): Xboard 1 & 2 (CECP) - Linux/Unix/(Windows) Belofte 2.1.1 and up (c++11) : UCI and Xboard 2 - Linux/Windows/Mac/Android/... For access to code, please clone the git repository. Compiles and Runs on 32/64 bit on Windows, Mac, Linux, Android (ARM/x86) and Raspberry. Released under GNU v2 license. (means free to copy, free to modify, free to use, ...) Works fine with Arena/Cutechess/BanksiaGui/Winboard/Xboard/... -
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PSID64
Convert PSID and RSID files into C64 executables
PSID64 is a program that converts PSID and RSID files into C64 executables. This allows users to play PSID and RSID files (originally used by the PlaySID program) on a real Commodore 64 computer or emulator such as VICE. -
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A relatively easy to win but feature rich fantasy roguelike game with a highly interactive world. Avanor was once a great land, but now it is an isolated valley kingdom under serious threat. You, as the hero must save Avanor, or dominate it.
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Emeritus Pong
A clone of the good old "Pong" game.
Emeritus Pong is a clone of the good old "Pong" game. It tries to be relatively close to the original, therefore no fancy graphic or astonishing sound effects there. Emeritus Pong is written to be able to run on any modern PC. There are three versions available: DOS, Windows and Linux. Emeritus Pong features also a cool demo mode, which makes it playing against itself, displaying the current time as scores. The game is programmed to run flawlessly on any modern PC, but it will run on older architectures, too. A 90 MHz Pentium CPU and 2 Mb of RAM should be enough to run comfortably the DOS version. Emeritus Pong may run in any usual resolution, ranging from 320x240 to 1280x1024, fullscreen or windowed. If you would like to use any other video mode (not available from the game's setup), you will have to manually edit the empong.cfg configuration file. Windows and Linux versions require a sound card for sound, and DOS version simply uses the internal PC Speaker. -
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Dice endgames
Dice endgames — generation of endgames with dices.
Dice endgames is a gambling and logical game with perfect information, at the same time being a variety of both variants of chess and checkers-like games, and dices. In this game, the arrangement of chess pieces depends on the values on the sides of the dice. It was conceived as teaching and training how to solve endgames, problems or random arrangements, such as Fischer's chess, in various board games of logic. -
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A quick-and-dirty maze game written in pure text-mode C with an available SDL frontend. Find the goal and make it to the exit.
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Kraptor - Shoot 'em up scroller game
Kraptor is a classic shoot 'em up scroller game
Kraptor is a classic shoot 'em up scroller game, where you must fight against tons of bad dudes. This is a full game with massive destruction, powerful weapons, and high speed action in varied levels. Works for Linux, DOS, Windows, QNX, Mac Os, etc.. -
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VisPatch is a tool for patching quake maps for transparent water in glquake: it is used for preparing and applying the patch files. This is a thoroughly revised version of the old source for unix (linux, freebsd, ...), as well as windows.
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Divine generator
Divine generator of riddles for arrangement.
The original idea of Alexander V. Catapang Jr. in the Guess-Chess from the eGames package. Divine generator is an addition to the idea and transfer of rules to makruk, xiangqi and shogi. -
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Fox Oring
Fox Oring is a variation of the radio orienteering.
Fox Oring is a variation of the sport of amateur radio direction finding. Fox Oring is a timed race in which individual competitors use a topographic map and a magnetic compass to navigate through diverse, wooded terrain while searching for radio transmitters. The term is derived from the use of the term fox hunting to describe recreational radio direction finding activity and an abbreviation of the word orienteering. It is necessary to discover 5 hidden transmitters located on a 10 × 10 field in as few moves as possible. The transmitters broadcast in all 8 directions, the number on the cell indicates the number of intersecting signals. -
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MegaZeux (MZX) is a simple but powerful game creation system. It currently officially builds on Windows (9x, 2k, XP), Linux (multiplatform), and MacOS X. Versions prior to 2.80 are available only for MS-DOS.
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Omega is a roguelike game originally written by Laurence Brothers in the late 80s. It was the first roguelike game with a large "countryside", plot development, quotable quotes, and a sense of humor.
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ArdReil is a multiplayer, multiplatform, networked strategy game of galactic conquest and resource management, providing opportunities for diplomacy, betrayal, cunning, and cooperation. Unite the Galaxy - preferably under your own flag.
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R-P-S
Rock, Paper, Scissors is a hand game.
«Rock-Paper-Scissors» is a hand game originating in China, usually played between two or three people, in which each player simultaneously forms one of three shapes with an outstretched hand. These shapes are «rock» (a closed fist), «paper» (a flat hand), and «scissors» (a fist with the index finger and middle finger extended, forming a V). A simultaneous, zero-sum game, it has three possible outcomes: a draw, a loss, or a win. -
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Sudoku MC
Sudoku solver based on the initial work of Michael Kennett
Console based sudoku solver. It is a modified version of the solver included in the Ubuntu distribution of Linux, and has similar functionality to the original by Michael Kennett. New features: - You interactively can open and save boards with it. - The title of the board can be edited. - Added early contradiction check to detect if the board is unsolvable: 1 2 . | . . . | . . . . . . | 1 2 . | . . . . . . | . . . | 1 2 . -------+-------+------- 2 1 . | . . . | . . . . . . | 2 1 . | . . . . . . | . . . | 2 1 . -------+-------+------- . . . | . . . | . . . . . 2 | . . 1 | . . . . . 1 | . . 2 | . . . - Contains a default template, so it can run on it's own, without any additional external file. - The embedded template can be saved to disk. It will be used if specified as an input argument, or just exists in the working directory, so you still can customize. -
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JustEmpire and TEmpire (Tiny Empire) are two Empire-derivative games based (very!) loosely on Walter Bright's original Empire concept (classicempire.com), using JustBasic (justbasic.com) and Borland Turbo C/C++ (bdn.borland.com/museum). Others possible.
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dm2conv
DM2CONV/GFXMAKER v3.2 utilities Windows/Linux/macOS x86/x64 port
DM2CONV/GFXMAKER (https://doomwiki.org/wiki/DM2Conv) v3.2 utilities Windows/Linux/macOS x86/x64 port. -
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Advanced Yacht
Yacht with nine-sided dices.
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AfA-Scumm is the 2D adventure engine powering AmberfishArts, a community for enthusiasts of classic adventure games as well as a hub for high-quality fan projects. Coded in C++, AfA-Scumm is both very portable and feature rich.