by Julius » 19 Jan 2012, 12:39
I never used it, but had a closer look at it some time ago.
It seems to be quite useable for FPS type games (yet not really better than Quake based engines, which also have good editors and lightmap tools).
It would have probably been used more often in game projects, if it wouldn't have been closed source during it's main development phase. It was just relatively recently open-sourced (1-2 years ago?) in what seemed a decision by the original developer to focus less on its development (aka "open-source dust bin") and thus interest has been low.