Irrlicht Engine - A free open source 3D engine

The Irrlicht Engine is an open source realtime 3D engine written in C++. It is cross-platform, using D3D, OpenGL and its own software renderers. OpenGL-ES2 and WebGL renderers are also in development. It is a stable library which has been worked on for nearly 2 decades. We've got a huge community and Irrlicht is used by hobbyists and professional companies alike. You can find enhancements for it a

[makotan]

The Irrlicht Engine is a high performance real-time 3D engine written and usable in C++,

[nsta]

フリーのライブラリ／ライセンスはzlib

[nilab]

Irrlicht Engine - A free open source 3d engine

[wacky]

オープンソースなゲーム用3Dエンジン。zlibライセンス。