Earn score by finding the only one different color from the 25 pieces of squares!
Each time to correct the problem, the problem is more difficult.

In the world, what th is your eyesight?

[Normal mode]
Please select a different squares of color
It will be difficult as the stage progresses

[Time Rush mode]
How to play is the same as the normal mode
There is a time limit in each stage

[Score reset]
You can reset the highest score to date.

[Ranking]
By linking to Game Center, you can compete the score with people from all over the world.