Hello isisbathory, thanks for your interest in the game (at least I see that you have tried few times)! I appreciate your feedback and in fact I have got few other similar feedbacks like yours. I am finding time to include some “quick start screen”, perhaps that can help you understand it.
Basically there are two parts on the game screen: the falling block (number 3), and those blocks at the bottom (number 4). Players are required to control the falling block with directional keys on your keyboard, trying to match it with another block at the bottom:
You are supposed to match a Hiragana/Katakana with its corresponding Romaji. For an example, matching "あ" block with "A" block is considered a match. Matching blocks will then disappear from the screen.
I hope that gives you a better idea of how this game can be played. Please let me know if I can explain it better. Thanks!