BTR Studios is a ROME, Italy based, videogame developer.
happy to answer your question, but first I have to preface something.
Our game is entirely based on two libraries Havok physic and, above all, Havok animation.
This is necessary to obtain the most functionality for the gameplay, not least the ability to "mix" of continuous animations and physics.
That said, whatever was the 3D engine we have chosen, it would be used only as a rendering engine. The animation, collision handling, and physics, now common in many 3d engines would have been completely bypassed by the Havok libraries.
So with these requirements, between January and May 2010 I started to look for a 3D engine with these features (in order of importance):
- Ease of seamless integration with Havok physics and animation engine.
(This would, as said, to "gut" or completely bypass the physics and animations "native" and replacing them with Havok)
- Performance and beauty of the rendering.
- Artist friendly and documented.
- Portability on xbox360 and ps3
Assessed about 10 engines (as it was their status in May 2010), the choice fell on Gamebryo 3.1.1