Phaser is a free and fast 2D game framework for making HTML5 games
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Classic 2D side-scrolling platformer game
Cross-platform 2D game engine focused on ultimate productivity
LayaAir is an open-source 2D/3D engine
Agent Skill for generating 2D sprite sheets and map, transparent PNG
A game engine powered by python and panda3d
Cross-platform 2D and 3D game engine with modular architecture
Pymunk is a easy-to-use pythonic 2d physics library
Sandbox video game with a powerful physics engine
A dead simple 2D game engine for Go
Fast JavaScript library for Delaunay triangulation of 2D points
The Tiny JavaScript Game Engine That Can!
An easy to use 2D HTML5 game engine written in TypeScript
A completely free, open-source, 2D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Open source library for creative expression on the web, desktop, etc.
Free game engine for development of desktop, mobile, and web games
Open source library for N64 development
Jazz² Resurrection: Open-source reimplementation of Jazz Jackrabbit 2
A high-performance, industry-standard 2D physics engine built on Box2D
Real Time Strategy game engine supporting early Westwood classics
3D and 2D game engine written in Rust
Fast and lightweight JavaScript game engine built on WebGL and glTF