Lucky Train

The company my brother works for, A Bit Lucky, has produced a social Facebook game called Lucky Train, in which you build a small town and then send the population around on trains to your Facebook friends.  The game is still in beta, and they're adding more features every week.

It's interesting - although I've played it a ton, I've found myself not quite as addicted to it as some of the other, stupider Facebook games, like Dragon Wars and Mobsters II, where you develop a character over time by doing little meaningless quests over and over.  The gameplay is actually far more interesting in Lucky Train, but I think the thing that's missing is that the plot doesn't shift or reset - you end up in an apex state, where you have a bunch of trains and a fully-developed town, and then there's not so much more to do other than the same thing over and over again.

I'm sure they know this, and are planning on adding that kind of thing when they shift out of beta.  I think when they do, they'll have a real hit on their hands - the graphics, sounds, and gameplay are far more fun than the other games like this, and the social aspect is fun, seeing all your friends on your train routes and sending trains back and forth.  It just doesn't yet have an addiction that lasts past where your town is mature, which in the current beta state takes about a month or so of play, compared to Mafia Wars and its ilk, where they keep giving you missions and levels until you burn out (for me, after about 6 months).

Anyway, check it out - it's fun!