A web-based IDE for HTML5 game development. Powered by Phaser
Fast and lightweight JavaScript game engine built on WebGL and glTF
Phaser is a free and fast 2D game framework for making HTML5 games
A free & open-source 2D sprite editor, made with the Godot Engine
Desktop/Android/HTML5/iOS Java game development framework
One framework for creating powerful cross-platform games
Real Time Strategy game engine supporting early Westwood classics
Classic 2D side-scrolling platformer game
LÖVE is an awesome 2D game framework for Lua
A J2ME emulator for Android
LayaAir is an open-source 2D/3D engine
Roo Code (prev. Roo Cline) gives you a whole dev team of AI agents
A Java math library for OpenGL rendering calculations
Jazz² Resurrection: Open-source reimplementation of Jazz Jackrabbit 2
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A dead simple 2D game library for Go
Modern, lightweight and efficient 2D level editor
Pixel-art map visualizer for Minecraft
Easy to use Python library for creating 2D arcade games
3D and 2D game engine written in Rust
Pymunk is a easy-to-use pythonic 2d physics library
Cross-platform 2D and 3D game engine with modular architecture
The Tiny JavaScript Game Engine That Can!
RPG Maker 2000/2003 and EasyRPG games interpreter
Free, open source game engine online