SIMS was actually a way of getting myself to use Squeak (between paid gigs of web programming in the usual awful stuff) by throwing together a bunch of ideas and seeing what would stick. I have coded AI engines for video games before, and this was an experiement forward. I'm currently working on building it up into a serious MOO engine, with the naturally-seductive goal of tying it into Croquet. :)
There. I've made my gratuitous post about Croquet. Now I can be content. :)