The Ruby 2D gem
Free, cross-platform 2D game engine powered by Haxe and OpenFL
LayaAir is an open-source 2D/3D engine
Cross-platform 2D game engine focused on ultimate productivity
utility collection for 2D game development in Java; sound-player
An easy to use 2D HTML5 game engine written in TypeScript
Classic 2D side-scrolling platformer game
Cross-platform 2D and 3D game engine with modular architecture
A tool to select chunks from Minecraft worlds for deletion or export
Desktop/Android/HTML5/iOS Java game development framework
2D JavaScript Physics Engine
A game engine powered by python and panda3d
A dead simple 2D game engine for Go
A high-performance, industry-standard 2D physics engine built on Box2D
Open source library for N64 development
A completely free, open-source, 2D game engine
Java/JavaFX/Kotlin Game Library (Engine)
Free game engine for development of desktop, mobile, and web games
Cocos simplifies game creation and distribution with Cocos Creator
Phaser is a free and fast 2D game framework for making HTML5 games
Easy to use Python library for creating 2D arcade games
Telegram Bot API for Java
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A Minecraft mod designed to improve frame rates