G3D Innovation Engine is described as 'The G3D Innovation Engine is a commercial-grade C++ 3D engine available as Open Source (BSD License). It is used in commercial games, research papers, military simulators, and university courses' and is an app in the Development category. There are more than 50 alternatives to G3D Innovation Engine for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Android. The best alternative is Godot Engine, which is both free and Open Source. Other great apps like G3D Innovation Engine are Unity (Freemium), Unreal Engine (Freemium), GDevelop (Free Personal, Open Source) and Wick Editor (Free, Open Source).