Your fellow HISS tanker Splintershins made this custom TMNT boardgame dio.
"Here's a look at the project I'm currently working on. It's a totally modular board game based on Ninja Turtles. It has street level and sewer level maps, and will involve racing around the city, trying to stop Shredder from spreading havoc. Anyway, here's an example of one of the maps, the buildings all collapse flat for storage and everything is swappable."