Every time you make the correct pattern, the game becomes difficult. The game starts easily when you have only two or three changes to make. Required changes start to increase as you progress through the game. And the real fun begins when the small grid which you observe starts to rotate.
Fish
Big E
Princ
Yeti
Relic
Ticto
Shoot
Ghost
Hippo
Jelly
Paddl
Mr Wi
Barbe
Sushi
Amgel
Littl
Hero
Candy
Poke
Casin
Santa
Fashi
Emily
Doll
4hock
Gym S
Stret
Space
Baby
Cute
Zigza
Duet
Fish