Remove all the blocks to make the composite number going out but keep the prime number. Click or tap the unused block to drop the composite numbers.
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Rescu
Kille
Pongo
Kids
Dinos
Afric
Snowb
Girls
Mr.jo
Princ
Stick
Uncha
The R
Rotat
Summe
Caste
Twin
Batty
Eleme
Eyes
Shado
Happy
Dualc
Noob
Porsc
Smart
Face
Nonog
Speed
Word
Mummi
Horro
Paper