MBTABingo is a game that people can play completely on Twitter, although it has a website component to show rank and results. To get a card, simply tweet to @mbtabingo. A bingo card will be returned attached to a tweet. To fill out the card, tweet photos with the correct hashtag to @mbtabingo.
The bot will return a card with the square filled out.
Twitter awarded us “Best Use of API” award at the hackathon and wrote up our entry on the Twitter developer blog.