Hi, Gurus! I am trying to run the open version of Micropolis from here:

Dan's random thoughts: Micropolis for OS X (Tiger) - GPL version of SimCity

but, having no idea at all what I am doing, am geting nowhere. I have downloaded the intel .dmg for my MBP, along with play and X11. Now what do I do with them all?

I tried running the application - it gave this script:
Macintosh:~ dsboffa$ /Volumes/Micropolis/Micropolis.app/Contents/MacOS/Micropolis; exit
2008-05-14 14:14:43.569 Micropolis[1438] LCC Scroll Enhancer loaded
Starting Micropolis in /Volumes/Micropolis/Micropolis.app/Contents/Resources ...
dyld: Library not loaded: /usr/X11/lib/libX11.6.dylib
Referenced from: /Volumes/Micropolis/Micropolis.app/Contents/Resources/res/sim
Reason: image not found
/Volumes/Micropolis/Micropolis.app/Contents/Resources/script: line 5: 1442 Trace/BPT trap res/sim
[Process completed]