A pure Go game engine
Traditional roguelike game with pixel-art graphics
Plugin for IntelliJ IDEA that gives special support for Minecraft mods
Cross-platform game engine in Rust
1.21.11 Lightweight Minecraft server
Zig game engine & graphics toolkit
Just another ComputerCraft fork
A Java math library for OpenGL rendering calculations
Purpur is a drop-in replacement for Paper servers
A layer built on top of the Insight Toolkit (ITK)
Gameboy emulator in Java 8
The HTML5 Creation Engine
Memory Efficient Serialization Library
Native Android app for Habitica
High performance UI layout library in C
Game engine supporting many 3D/2D formats and graphic effects
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Europa Universalis 4 save game editor
Action RPG that's easy to mod
An in-progress 2D tactical RPG
Orx: Portable Game Engine
Free, open source game engine online