s&box is a modern game engine, built on Valve's Source 2
API and runtime that allows access to VR hardware
Turn Claude Code into a full game dev studio
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Desktop/Android/HTML5/iOS Java game development framework
A modular Common Lisp game engine
Includes the boilerplate code for a GenLayer use case implementation
A completely free, open-source, 2D game engine
JavaScript-based game engine designed to empower developers
An open source reimplementation of the Among Us Server
Moonlight port for Nintendo Switch
Generate any location from the real world in Minecraft
Open-source OpenGL/SDL2 reimplementation of Sid Meier's Alpha Centauri
Skript is a Bukkit plugin which allows server admins
An Android application for browsing video games
A retro game engine for Python
Dedicated Game Server Hosting and Scaling for Multiplayer Games
Python MUD/MUX/MUSH/MU* development system
Java/JavaFX/Kotlin Game Library (Engine)
V1, Mirror Classic. V2, Mirror Engine: Join Discord for access
Go bindings for raylib, a simple and easy-to-use library
Cross-platform game engine in Rust
Futuristic Luau for every universe
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Framework for producing web-based database applications