Quick -- how well do you know the CTA?
Try this CTA puzzle, which is a mix of CTA knowledge and typing skills. Players have 60 seconds to unscramble as many CTA stops as they can. There are more than 140 stations in the CTA system.
The puzzle was created by James Offer, an Australian user experience designer. Offer has also created word puzzles based on rail systems in Australia, the United Kingdom and Canada.
A few weeks ago, Offer created his first rail puzzle for the system in London, where he lives. He got a good response so he made puzzles for other cities. "I find it really interesting as a concept as you really need to know the city to even have a chance of playing the game," Offer said in an e-mail.
Chicago's system matched the format of his game "quite well," he said. Offer told RedEye he has not been to Chicago.
My highest score is 20. What's yours?