GemEngine
Advanced technology that powers large scale, independent 3D games
GemEngine(or just "Gem", for short) is a game engine centered around ease of use, clean code, and modern technology.
The engine is multi-purpose and is geared toward platform/adventure games. The engine itself is actively used by the same developer to create a full scale indie game. Everything about the engine, from its content editor down to its source code is designed to be easy to understand.