Non-Euclidean Doom, where the value of pi is not 3.14159

Boing Boing: Welcome to "Non-Euclidean Doom," where circles aren't anymore. Jump to 7:33 in the video embedded below for the action. With pi equalling 3, "the walls are a little off, and things are not moving as you might expect." Then pi is set to e, and "things are a little more interesting." Pi at 0.0001? Not exactly as easy as pie.