SocioTown is a 100% web-based 3D MMO. It'll be playable in your browser with no downloadable client required. It utilizes Adobe's Shockwave Player, which most browsers already have installed.

When asked, what does the game closely resemble (because we all need comparisons, right?), I usually say it's an MMO Social Game with a bit of a mix of Nintendo's Animal Crossing and The Sims.

Every building you see in the above screen shots will be inhabited by players and you'll be able to do a variety of activities around town. We're implementing a very intuitive social system that hasn't been done before to our knowledge. I'm personally very excited about this game so far and I can't wait for players to get their hands on it.

(Excerpted from Outside The Box's Sociotown Dev Diary)