Xash3D FWGS engine
Voxel game-creation platform with easy modding and game creation
New Godot bindings for Swift
Free, cross-platform 2D game engine powered by Haxe and OpenFL
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Cross-platform game engine in Rust
Multi-platform 2D and 3D game engine
Orx: Portable Game Engine
Urho3D Game engine
online 4X browser game engine
The Atomic Game Engine is a multi-platform 2D and 3D engine
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
2D physics engine for games
cross-platform 2d game engine
Cross-platform 2D game engine