This thing... is not so much a game as it is an educational software. It can help a Xiaobai who wants to learn Japanese but doesn't know how to start, and it is better to start from the basics -Kana (Anyone).
I am a Japanese teacher. I personally think that the most difficult part of Japanese is the learning of pseudonyms. There are 47 hiragana and katakana each, and the total is 94. Among them, Katakana is believed to be troublesome for beginners, because they almost only appear in a small number of nouns and a few verbs. Even if you give it up completely, you will only waste a lot of it in the grade exam at most.