Fly higher
You may fly higher (up to 5 blocks higher) by tapping up instead of holding it. Most useful in levels 9 and 12, though can be helpful throughout entire game. – ddaniiel
Level 19 secret level
19 secret level has no spikes or walls, but rather a never ending freefall where one can claim up to 94 stars (any more is impossible). Unfortunately the only way to die in this level is to wait for the 5 minutes, or 300 seconds, to run out. This level is different to the level 11 bonus in that you have 300 seconds, not 10, to collect stars, and you do not progress onto the next level after finishing, you repeat level 19 again and again until your lives expire. – ddaniiel
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