MGB was made to show the potential of Flex and Ruby on Rails and presented to Bill Gates and Ray Ozzie in 2007. After that the site was kept online and updated with new features for a few years. Today the site has over 150,000 accounts made. Forum has over 500,000 posts.

All games made on the website are made by drawing art, making actors by adding behavior, then putting them into maps than connect to each other. By opening up someone's profile you can see all of their games and find out exactly how they did every part of the game.
2 Cities