Hi,
In case you are unfamiliar with SLUDGE, it's the engine that powers for example
Out of Order,
Nathan's Second Chance,
The Game That Takes Place on a Cruise Ship, as well as my own
Frasse and the Peas of Kejick.
I have now joined the SLUDGE team and have almost completed getting the game engine to run on Mac OS X! It does run all released SLUDGE games now, so I guess we can call it being in beta. No public release of the Mac version is available yet, but the source code can be found
at SourceForge.
If you're interested, I have started
a thread over at Adventure Developers for discussing the future development of the engine.