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.
Chris
Memor
Ink I
Car R
Happy
Advan
Brick
Goku
Frank
Willo
Choli
Stick
Mr. M
Make
The B
Psych
Yatzy
Bubbl
Hallo
Onet
Pong
Cute
Valen
Arche
Beaut
Iron
Aircr
Road
Real
Block
Skele
Missi
Papa