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
Classic 2D side-scrolling platformer game
A J2ME emulator for Android
Jazz² Resurrection: Open-source reimplementation of Jazz Jackrabbit 2
Cross-platform 2D and 3D game engine with modular architecture
Real Time Strategy game engine supporting early Westwood classics
LÖVE is an awesome 2D game framework for Lua
Naev is a 2d action/rpg space game, action, rpg and simulation
Cross-Platform C++ 2D/3D game engine
A Java math library for OpenGL rendering calculations
Roo Code (prev. Roo Cline) gives you a whole dev team of AI agents
Cross-platform 2D game engine focused on ultimate productivity
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Tactical 2D shooter in fishy pixels style. Made with Rust-lang
Pymunk is a easy-to-use pythonic 2d physics library
LayaAir is an open-source 2D/3D engine
Java/JavaFX/Kotlin Game Library (Engine)
An easy to use 2D HTML5 game engine written in TypeScript
Easy to use Python library for creating 2D arcade games
A refreshingly simple data-driven game engine built in Rust