Solar2D Game Engine main repository (ex Corona SDK)
LayaAir is an open-source 2D/3D engine
A retro game engine for Python
Open source library for creative expression on the web, desktop, etc.
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
A fast, scalable, distributed game server engine/framework for C++
Mahasona engine is an open source game engine.
Egret is a brand new open mobile game and application engine
Gomoku Game: Playing with Computer