For our clients Bell BAJAO (it means - Ring the Bell), we created a web based social game in flash and php. The game uses Facebook connect to get people to join the game. The objective of the game is simple- to get as many people to move a bus across India. To move the bus you need to log in using your facebook account, then write a catchy slogan and voila, the bus moves to the next stop. Now your slogan would have also got posted on your wall and if your friends vote for you then you can win fantastic prizes.