Operation is very easy.
First I tap the icon, such as "fist", "sword", "ax", "magic".
I knock down slime to attack with the weapon which I chose.
The point is obtained when I knock down slime.
The slime which appears into a game is 50 or more kinds at all.
Since there is also a pictorial book, lets play anyhow and bury a pictorial book.
I get the wall paper of the application original if I accumulate a point.