I'm just downloading it from here and hoping that there is a Mac Version included, since most RP-creation programs offer these and I've seen a lot of Games containing an .exe-file as well as an .app-file to start them.
Linux usually uses WINE to run Windows-based programs, but if someone's capable of offering an executable .sh-file, it's even better.
Anyway, hoping to find the .app-file in the unzipped folder and looking forward to playing it, now that I know it's like a cute little pixel-RPG *weeeee*