SonarSource Static Analyzer for Java Code Quality and Security
utility collection for 2D game development in Java; sound-player
An easy to use 2D HTML5 game engine written in TypeScript
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Cooperative multiplayer graphical RPG and adventure game
Java/JavaFX/Kotlin Game Library (Engine)
A game engine powered by python and panda3d
Pymunk is a easy-to-use pythonic 2d physics library
Arianne is an engine to develop multiplayer online games like Stendhal
Action RPG that's easy to mod
Naev is a 2d action/rpg space game, action, rpg and simulation
Desktop/Android/HTML5/iOS Java game development framework
Jazz² Resurrection: Open-source reimplementation of Jazz Jackrabbit 2
Stride (formerly Xenko), a free and open-source cross-platform C# game
Make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons
Source of Mana is a unique 2D MMORPG
Gideros Release version
The Tiny JavaScript Game Engine That Can!
Free game engine for development of desktop, mobile, and web games
Ct.js is a desktop game engine that makes learning programming fun
Public repository of source code for the Universal Pokemon Randomizer
One framework for creating powerful cross-platform games
2D JavaScript Physics Engine
Traditional roguelike game with pixel-art graphics