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.
Mouse click Touch
Cloak
Footb
Hocke
Stunt
Crazy
Stack
Easte
Match
Amgel
Panda
Profe
City
Cute
Squid
Onet
Racin
Chin
Winte
Bff N
Tap T
Toile
Skibi
Myste
Princ
Traff
Roll
Impos
Metal
My Va
Wound
Dump
Block
Block