Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Cross-platform 2D and 3D game engine with modular architecture
A retro game engine for Python
LayaAir is an open-source 2D/3D engine
Open source library for creative expression on the web, desktop, etc.
Solar2D Game Engine main repository (ex Corona SDK)
Cross-platform game engine in Rust
Kotlin extensions for the libGDX game framework
Recreation of the classic Grand Theft Auto III game executable
Game engine supporting many 3D/2D formats and graphic effects
KlayGE is a cross-platform open source game engine
A fast, scalable, distributed game server engine/framework for C++
Low-Level Game Engine for Retro Platforms
Free and Open Game Programming Language for Windows and GNU/Linux
A project to create a blazingly fast Swift game engine
Game engine allows you to create own MMORPG
Open-source, cross-platform, C++ game engine for creating 2D/3D games
Mahasona engine is an open source game engine.
Java decentralized cross-platform network multiplayer game engine
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Educational framework for OpenGLES, OpenCL and OpenAL
A 2D Adventure Game & Engine
A truly extensible cross-platform game engine