Open Source Games

Exult is a project to recreate Ultima 7 for modern operating systems, using the game's original plot, data, and graphics files.

The main Oolite repository.

A demake of Portal for the Nintendo 64

FIFE is a multi-platform isometric game engine

An emulation engine to improve Warcraft III modding

Ambermoon rewrite in C#

Base environment for Red Eclipse and associated source files.

Legend of Dragoon decompiled, reverse engineered, and ported to PC/Mac/Linux/Steam Deck

A replacement engine for Ultima VII The Black Gate (and eventually Serpent Isle) that presents a new camera angle and other improvements.

Pharaoh (1999, open source engine)

Importer and scripts for Warcraft II: Tides of Darkness, the expansion Beyond the Dark Portal, and Aleonas Tales

Anura Engine

VDrift source code

A sandbox billiards game that emphasizes realistic physics

A remake of the classic Dune 2 - The Building of a Dynasty (by Westwood Studios) with several enhancements. Like: higher screenresolutions, zooming, multiselect, skirmish play, etc.

OpenKO is an open source version of the old school Knight Online MMORPG. Specifically designed for version 1.298.

A new and modern engine for custom Tomb Raider levels incorporating classic features and new enhancements.

This is the official GitHub mirror for the FTEQW project.

Dust Racing 2D is a traditional top-down car racing game including a level editor.

Strategy game based on history, mythology and fiction

Duke Nukem 3D (1996) by 3D Realms Entertainment, Inc.

An open-source re-implementation of "Commander Keen in Goodbye Galaxy"

A 2.5D side-scroller beatemup, made in Bevy

Game engine capable of running KotOR and TSL

An open-source Tomb Raider 1 engine remake

Abyss Engine clean-room reimplementation of Diablo 2, written in C. The goal is to recreate the original game engine, but on a portable platform that can also easily be modded and extended.

Doom 64 Reverse Engineering By [GEC]

OpenBW - free and open-source Best Wargame

A purist Quake source port that restores the original look and feel of v1.09 and earlier.

3D racing game with Sci-Fi elements and own Track Editor. The main repository with sources and data. Using Ogre-Next 3.0 and VDrift.

CatacombGL is a source port with OpenGL graphics for Catacomb 3D (1991), The Catacomb Abyss (1992), The Catacomb Armageddon (1992) and The Catacomb Apocalypse (1993).

Yorg (Yorg's an Open Racing Game) is a free open source racing game developed by Ya2 using Panda3D for Windows, OSX and Linux.

Javascript/HTML5 rewrite of Panzer General 2 game

Settlers 1 clone written in C#

Importer and scripts for Starcraft

Moddable engine reimplementation of the Japanese roguelike Elona.

Fuck you, T2

Port of the 3D Realms game "Duke Nukem 3D"

Importer and scripts for Warcraft: Orcs and Humans

Classic bi-plane shoot-'em up

NakedAVP is a port of Aliens vs Predator Classic (2000) to modern systems, based on the icculus port for Linux, macOS and Windows using SDL3

Brood War API

A 2D point'n'click-like adventure game written in Qt/QML and Javascript

Standard of Iron is an open-source, single-player real-time strategy game in which Rome and Carthage fight across an altered Second Punic War. Command whole formations from above, take direct control of a battlefield commander, build and defend supply lines, and carry Hannibal's army from the Rhône to Zama while the Iron Sepulcher gathers forces.

Open Source Lugaru upstreamed from the osslugaru project https://gitlab.com/osslugaru/lugaru

Wouter van Oortmerssen's Cube source code

OpenNox main repository.

NuBuildGDX is a fork of BuildGDX aiming for stability, bug fixing and performance.

Fork of the original AvP port for Linux, expanded with multiplayer and other features

Official source release for Shadow Warrior