When a person learning Japanese learns hiragana and katakana, almost certainly face difficulties, maybe.
It is the puzzle due to "similar characters".
In Hiragana, "あ" and "お", "れ" and "ね", "め" and "ぬ" and so on.
In katakana, "ス" and "ヌ", "ソ" and "ン", "シ" and "ツ" among other things.
If you continue to learn Japanese for a long time, someday I think that it will be possible to distinguish this type of misleading Japanese KANA, but, do not you think it would be fun to learn with a game feeling, early?

This application is a game that looks for similar characters from many hiragana and katakana.
Please find similar (mistake) characters.

I think this app is effective for people children and who want to remember primary Japanese.

Since sound comes out, you will know the Japanese pronunciation.

Please pay attention to Gestsltzerfall caused by overdoing.