The game that almost got me started on a similar project was the NES
game "Dragon Warrior IV". You can play it in emulation on the PC. 

It is an incredibly detailed game that would be easy for the user to
edit (Just drag-and-drop tiles), and features the most sophisticated
scripts and message-generation systems I've ever seen. 

Eric Scharff wrote:
> The reason I ask is because I'm toying with end-user world creation, 
> and I'm looking for examples.  Wonderland seems to be one of the best
> within-squeak examples.

-- 
Sometime in 1996 God reached down from the heavens and created a game
called "Terranigma". ;)
http://users.rcn.com/alangrimes/