Looking for new ways to gamify kanji learning

Hi everyone! About 8 months ago, I created a flashcard app that got its start here in this sub. I've been working on it to make it more than a flashcards app, first by adding tests, and now games that test you on the words that you have in your flashcards deck.

These are the 3 games I've implemented so far, and I'd love to hear any ideas you all might want to share so I can try implementing them.

I do have a couple more game concepts in mind (Tetris and Flappy Bird, adapted for kanji testing, of course), but it's always great to hear what other learners are looking for.

I also have another idea that I won't develop because I don't have the time or resources for it, but I'll share it in case anyone wants to steal it and make it work:

Kanji Crush! Basically Candy Crush, but with kanji. I think it could be a fantastic idea, but I have neither the design skills nor the budget to give it the polished look it would need, so yeah, up for grabs!

by PolyglotPaul