Glitches

In Smash Hit, there are multiple glitches that can happen. Here is a complete list, and their respective images.

Random Rooms Glitch
See Random Rooms Glitch for more info.

Disappearing Room Glitch
Though extremely rare, rare on zen mode and possibly on only some devices , the Disappearing Room glitch can occur at any time , although it is extremely-extremely rare for blank door before the disappearing room glitch occurs. First, the next stage you enter will not have anything visual, except the balls you throw, powerups, shadows, the door outline, and the background color, there is also a blank door at the end. After passing this level, the next level might consist of nothing. No solid surfaces, no objects, no music... just the endless abyss of echoing after throwing a ball, and a white background. 

Stop Glitch
The stop glitch can randomly occur anywhere, but it usually happens at the beginning of a stage. Sliding objects and your progress will idle, while balls and objects with gravity continue to move. This likely occurs because of music failing to load, thus you can also cause this to occur by playing an alarm on iOS devices in the middle of a game. Exiting (not closing) and resuming the game will resolve the alarm-activated stop glitch. A video is here :

The only requirement for the stop glitch is to make the music not play, so causing lag while Smash Hit loads a different stage might also cause a stop glitch.

An easy way to do this is to continue from Checkpoint 9 and throw a bunch of five-balls. This causes a lot of lag, but don't stop until the music stops playing or it appears that the camera has stopped. (It might be a good idea to turn sound effects off.) Don't hesitate to throw all of your balls before the camera stops, since there are enough crystals to give you more if you run out. If you have enough balls, you will most likely trigger the glitch since the music has failed to load due to lag.

Lose in the Credits/More Games Glitch
If you tap "more games" or “credits" in versus and co-op mode, by throwing balls you can drop to zero and lose.

Infinite balls glitch (Old versions)
In some older versions of Smash Hit, it was possible to retain your balls and multiplier status after restarting the stage. To reproduce the glitch, you need to start from a the Introductory Stage, close the game and reopen it, then click resume. Then collect some crystals and restart the stage. You will notice that your ball count has been preserved.