Life is like a clogged toilet. It's full of crap until you do something about it.
I don't speak Karate!
Yes. It does that, and much, much more...
This mod literally takes every feature from an older version of the game and gives you a nifty little GUI to change them with. You can play with old terrain generation, old fire spread, old mob tactics, no exp, old scores, old lighting setups, etc.
[Edited on 12.01.2012 11:32 AM PST]