I am currently doing the legacy challenge but I am also in the middle of the 100 baby challenge and Supersim challenge. The only one I've actually completed is the "movin on up challenge." This is where you move from apartment to apartment trying to get to the penthouse- if you google it you'll find the rules. I really want to try the decades style legacy or the eras one. I've also been thinking about doing a "disaster game" but it's something I made up but isn't a fully formed idea. I think I'll take the time to put it together and post it as soon as I'm allowed to post on the forums.