World Ranking correspondence!!
It competes for a time until it clicks in order the number and the alphabet which are arranged at random and all erases them.
Since it is an easy rule, both children and old persons can enjoy themselves.
It leads also to activation of kinetic vision or a brain!?
Difficulty is three kinds, the beginners' class, the middle class, and an upper class!
Number mode and alphabet mode were prepared for each.
Ranking corresponds also to World Ranking besides the ranking of a terminal.
Ranking is divided at given difficulty.
If it ranks 1st in the ranking of a terminal, it will become possible to register to World Ranking.
Let's compete for the rival and time in the world!