A mod to make and play Terraria mods. Supports Terraria 1.4
UCI chess engine
Godot is a powerful cross-platform game engine
Set of Python modules designed for writing video games
Sandbox video game with a powerful physics engine
Custom launcher for Minecraft to easily manage installations
Magic Another Game Engine
The main repository for the development of the evolution game Thrive
C# application with primary purpose of farming Steam cards
Home theater software and entertainment hub for digital media
A Native GOG and Epic Games Launcher for Linux, Windows and Mac
Real Time Strategy game engine supporting early Westwood classics
A retro game engine for Python
A downloadable game for Windows, macOS, and Linux
Simple GTK# Paint Program
Free, open source game engine online
Open source HTML5 game framework that offers WebGL and Canvas
Custom launcher to manage multiple installations of Minecraft at once
Mangos ZERO is a server for World of Warcraft
Solar2D Game Engine main repository (ex Corona SDK)
The Game Center offers unblocked games
Powerful, mature open-source cross-platform game engine for Python
Open source clone of the Age of Empires II engine
A fresh & lightweight javascript game engine
Free and open source real-time strategy game