This version doesn't work on 10.8.3. It crashes at launch with a Dyld error. It looks like the library path was hard-coded as the path on the developer's machine, so the game can't find it on mine:
Library not loaded: @rpath/SDL.framework/Versions/A/SDL
Referenced from: /Volumes/VOLUME/rRootage.app/Contents/MacOS/rr
Reason: image not found
Also, this version of the game is ridiculously huge because the frameworks were built incorrectly. Instead of using symbolic links, they just contain multiple copies of the same files in different folders. I tried to build the frameworks using MacPorts and then use them to replace the frameworks inside the application package, but that didn't work, possibly because I did it incorrectly, and possibly because the binary was built incorrectly.