User blog comment:GamerPerson/Gamer News: Issue 2/@comment-3237550-20110121161318/@comment-2194058-20110126233921

@JellyrollZillerwig: 20 floor is a rumor. It would be long and difficult for bad-internet people to play through it. They probably mean 20 different designs, like Cashbot HQ's Mints. Or, the floors would be easy to complete. That's my guess.