It's been a few years but I always enjoyed using Ogre's API. It was nice. That said, Ogre has always been clear about it only being a 3D engine and not a game

It's been a few years but I always enjoyed using Ogre's API. It was nice. That said, Ogre has always been clear about it only being a 3D engine and not a game engine (which add network, sound, input, etc. capabilities).