Phaser is a free and fast 2D game framework for making HTML5 games
Cross-platform 2D game engine focused on ultimate productivity
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Classic 2D side-scrolling platformer game
Cross-Platform C++ 2D/3D game engine
A fully-featured OpenGL and GLFW extension for PHP
Agent Skill for generating 2D sprite sheets and map, transparent PNG
An easy to use 2D HTML5 game engine written in TypeScript
A dead simple 2D game engine for Go
A game engine powered by python and panda3d
Pymunk is a easy-to-use pythonic 2d physics library
Cross-platform 2D and 3D game engine with modular architecture
A completely free, open-source, 2D game engine
LayaAir is an open-source 2D/3D engine
Cocos simplifies game creation and distribution with Cocos Creator
Open source library for N64 development
A server software for Minecraft: Bedrock Edition in PHP
Free game engine for development of desktop, mobile, and web games
Jazz² Resurrection: Open-source reimplementation of Jazz Jackrabbit 2
A high-performance, industry-standard 2D physics engine built on Box2D
Easy to use Python library for creating 2D arcade games
Real Time Strategy game engine supporting early Westwood classics
3D and 2D game engine written in Rust
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
The Tiny JavaScript Game Engine That Can!