A retro game engine for Python
The game engine for everyone
LayaAir is an open-source 2D/3D engine
Open source clone of the Age of Empires II engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Free, open source game engine online
A cross-platform, open-source, pure C game engine for mobile game
3D Scene Builder
2D Game Engine
Data-oriented and data-driven game engine written in Rust
A game engine written in the D programming language
2D Game Engine for the Java Programming Language
Scripting language of the hawk game engine