s&box is a modern game engine, built on Valve's Source 2
A modular Common Lisp game engine
API and runtime that allows access to VR hardware
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Includes the boilerplate code for a GenLayer use case implementation
Desktop/Android/HTML5/iOS Java game development framework
Turn Claude Code into a full game dev studio
A completely free, open-source, 2D game engine
An open source reimplementation of the Among Us Server
Generate any location from the real world in Minecraft
Open-source OpenGL/SDL2 reimplementation of Sid Meier's Alpha Centauri
A retro game engine for Python
Dedicated Game Server Hosting and Scaling for Multiplayer Games
Moonlight port for Nintendo Switch
Go bindings for raylib, a simple and easy-to-use library
Java/JavaFX/Kotlin Game Library (Engine)
Cross-platform game engine in Rust
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Futuristic Luau for every universe
Open and edit the archive files used in over 5700 games.
cross-platform sound-playing package for C++ apps
General Purpose Engine for Graphic Adventures.
Zoomable user interface (ZUI) with file manager, file viewers and more
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Pure C Game Engine