I've been looking into ways to make games for free on Mac, and SilverCreator looks promising.
http://www.silvercreator.net/

It's a card based system, so it's possible to manually create each area. There's also scripting, so it's probably possible to implement Court Records and stuff.
Looks interesting.

---

Sorry, I'm not so sure I'm willing to trust a site for which the only two links are "Home" and "Forum" and that has an enormous whitespace with just the word "Welcome!"

At the moment, people are better off using cross-platform development tools, like Silverlight or Flash. (or anything that works in Wine)

---