Works in Linux using WINE. I bought it before I've even played a game of Gruntz just to see.

I rated it 5 stars because it does what it says it should as far as I can tell, but obviously as I'm running it outside of it's native operating environment I'm not getting a "normal experience" so I didn't want to mark it down any.

Ubuntu 14.10 and WINE 1.6.2 installed from repositories.