A game framework written with osu! in mind.
3D game engine/framework in C, with Luajit and Python bindings now
Svelto ECS C# Entity Component System
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Open source library for creative expression on the web, desktop, etc.
Free game engine for development of desktop, mobile, and web games
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Powerful, mature open-source cross-platform game engine for Python
Cocos simplifies game creation and distribution with Cocos Creator
Cross-platform 2D game engine focused on ultimate productivity
Open game and rendering engine packed into a JavaScript framework
Python MUD/MUX/MUSH/MU* development system
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
The game engine for everyone
The ioquake3 community effort to continue supporting/developing id's
Multi-platform 2D and 3D game engine
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
A completely free, open-source, 2D game engine
Modified source engine (2017) developed by valve and leaked in 2020
MIT Licensed Open Source version of Torque3D from GarageGames
A Tile-based Game Engine written in C# mimicing retro consoles.
Mini game engine for games104
Entitas is a super fast Entity Component System (ECS) Framework
A high speed C++17 Vulkan game engine
Javascript library for making tile based games