The Playstation 2 emulator
Command & Conquer: Remastered Collection
Custom launcher for Minecraft to easily manage installations
Desktop/Android/HTML5/iOS Java game development framework
DOSBox Staging is a modern continuation of DOSBox
A free/open source client and automation tool for Ragnarok Online
Open source clone of the Age of Empires II engine
An efficient graphical Minecraft seed finder and map viewer
Home theater software and entertainment hub for digital media
UCI chess engine
Descent 3 by Outrage Entertainment
A downloadable game for Windows, macOS, and Linux
Mangos ZERO is a server for World of Warcraft
Powerful, mature open-source cross-platform game engine for Python
3D Game engine with editor
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Community effort to maintain and improve Jedi Academy (SP & MP)
Doom-based AI research platform for reinforcement learning
3D racing game with Sci-Fi elements and Track Editor
TX Library is a tiny graphics library for Win32 written in C++.
2D game development library for Ruby and C++
Modified source engine (2017) developed by valve and leaked in 2020
A high speed C++17 Vulkan game engine
3D C++ Game Engine - yet another open source game engine