A Rust framework for building Minecraft servers
Open source reimplementation of GTA San Andreas game engine in Unity
Opensource crossplatform Fallout 2 game engine writen in C++ and SDL
A greedy game engine for greedy programmers
Engine remake of the game "Radix: Beyond the void"
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Vivid is a modern C++ 3D engine using OpenGL4+
3D C++ Game Engine - yet another open source game engine
2D Game Engine
Modern 3D engine and IDE written using C# and C++.
A RPG maker engine using Pygame
2D Game Engine with Lua Scripting made on top of SFML
Novellotyk is the engine for writing visual novels using freepascal
Small tool to dump/convert/ripping physical CD or virtual images
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Free and Open Game Programming Language for Windows and GNU/Linux
Open-source, cross-platform, game-development tools
Interactive Visualization Workshop
Web powered cross-platform 3D, WebXR game engine
a 2D Game Development Framework
3D-Accelerated open-source DOOM engine