Learn Japanese By Killing Slimes

So about a month ago I found this game that is a Japanese Role-Playing-Game, in the sense that it's a RPG where the goal is to learn Japanese. I've found it quite useful over the weeks, and I thought I'd share it with the whole Station Wagon.

*How much can I learn?
If you're new, the game will start by teaching you Katakana and Hiragana. However, if you've already mastered those, you can skip straight to learning Kanji. The website claims that the full version contains over 3000 Kanji, with 1000 Kun-yomi readings.

*How much does it cost?
The demo is free, but you can only learn up to 200 Kanji.
You can gain access to the Gradeschool version for $5 a month, or the Common Use version for $10 a month. However, once you pay $25 or more, you're considered a permanent member, and can unsubscribe from payments forever (everything past that is considered a donation).

You can also just buy the Common Use version for $25 right off the bat and not worry about monthly subscriptions.

*How often should I play?
Okay, I'll admit: you're probably not asking this, but I thought I should bring this up because it's important. The game encourages you to play a little bit everyday. It does this by utilizing its mechanics to condition you to playing like so.

*The way you save is by resting at an inn. This will bring you back to the title screen. If you wait a few hours before resuming play, then your health will be restored. You health will not be restored if you come back immediately.
*If you wait too long (a day or two) between play sessions, then you will be charged extra for "overstaying."
*You can only get three free meals at your home per real life day. These restore your health to full.

Interested? Try it out here: lrnj.com/