Quake 3 levels viewed with Ogre
Looks like it’s been around for a while, not sure why I haven’t run across it before.
They’ve adapted bits of it to render files in various game formats like Quake 3 (see above) and Tomb Raider. You can download
some Win32 demos
to see what the engine is capable of. Click “More…” to see several more screenshots of various Ogre-powered games and programs.