Good but doesn't replace the books.
Having learnt Japanese but havn't found the time to practice it has begun making me forget alot about this Language. Thankfully theres "My Japanese Coach," this game teaches you the basics from your first Hiragana scripts all the way to the more advanced Kanjis and grammar patterns. It even ranks you on a pre-school to highschool scale!
The game starts off with 50 multiple choice questions designed to test how good you are with Japanese, those with prior knowledge will go on to skip learning things like Hiragana, like-wise thoses without will begin with Hiragana scripts. However those who are more advanced with the language like myself will find this game a chore in the start, you are forced to start with very basic words and phrases like the months, you also have to repeat these things several times till you fill a Level bar in order to proceed with newer lessons.
Overall this is a nice package for those thinking about learning Japanese but don't have the time to go to school. Its great for the beginners as with the more advance learners (but you might find it slow), it does get intense as you level up to the high schooler material, however in my experience still doesn't beat the good ol' fashion text book.