Funnily enough, they didn't overlap at one point. Our original map design had smaller tunnels in it, so if they couldn't overlap, then they would get stuck going one way. Went back and forth on it for a lot of the development time, and eventually just had to focus on more important things before the time ran out. I agree about the different colored players, too. :) One of those "Why didn't we think of that" moments right after the deadline. The answer for why was because we were sleep deprived. ;)
Hey @garannm, sorry to hear it was erroring out, the game relies on there being other players so maybe there just wasn't anyone on the first time you tried. If you managed to get it to work it means you either were reading a tweet submitted to be 'broken' or you were listening to another player read a tweet for you to 'break'. We retweet all the 'broken' tweets to https://twitter.com/BrokenTele so have a look and see who's tweet you 'broke'. We'd really appreciate it if you took another look, either submitting a tweet to be 'broken' by authorizing and using #brokentele or arranging to play when someone else is on the site.