Cutie Differences

Very strange. This Spot The Difference is since a hint comes out from the start.
It is easy to memorize and easy to challenge.

Very cute charactors enters game.

1. It is a high score by a quick correct answer.
2. The more it carries out "Chain",the more the rate of a bonus when it answers correctly rises.
3. If it continues playing one collection of problems, a collection of problems will grow and carry out a class change.
There are three kinds of classes, Bronze, Silver, and Gold, and there is a privilege in them.
4. If LEVEL goes up, the bonus at the time of the end of a game will go up steadily.

Use well the four elements, try for higher scores than friends.