There are ten 'hidden' levels made by papa Blox's in Stretchmo studio five are given at the start (Sheep, Ice pop, Snail, bell pepper and red-roofed bourse) but the other five must be unlocked.
| Unlockable | How to unlock
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|---|
| Blastro | Complete levels 31-40 in corin's fortress of fun.
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| Clock | Complete levels 21-30 in corin's fortress of fun.
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| Floato | Complete levels 11-20 in corin's fortress of fun.
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| Guardo | Complete levels 1-10 in corin's fortress of fun.
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| Moai | Complete levels 41-50 in corin's fortress of fun.
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