Repeating Room Glitch

(a.k.a. Room of Purgatory)

A rare glitch. This only will occur past 30,000 points, and the stage will constantly repeat. Most likely, it will be encountered through the Random Rooms Glitch (getting up to 30,000, in which case you will see Now Entering Endless Mode first (the Now Entering Endless Mode Text Glitch after reaching 12,000 with the Random Rooms Glitch), however you can access this normally via the 3rd endless mode, by racking up on hundreds (or thousands) of balls. (Ball Grinding Method)

Even in the free version, if you do manage to reach 30,000, the glitch will happen.