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
LayaAir is an open-source 2D/3D engine
A dead simple 2D game engine for Go
Pymunk is a easy-to-use pythonic 2d physics library
A game engine powered by python and panda3d
Agent Skill for generating 2D sprite sheets and map, transparent PNG
Cross-platform 2D and 3D game engine with modular architecture
Cocos simplifies game creation and distribution with Cocos Creator
A completely free, open-source, 2D game engine
An easy to use 2D HTML5 game engine written in TypeScript
Sandbox video game with a powerful physics engine
Open source library for N64 development
Free game engine for development of desktop, mobile, and web games
The Tiny JavaScript Game Engine That Can!
Fast JavaScript library for Delaunay triangulation of 2D points
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
2D JavaScript Physics Engine
Multi-platform 2D and 3D game engine
Real Time Strategy game engine supporting early Westwood classics
A high-performance, industry-standard 2D physics engine built on Box2D