Project LRNJ

This is the project page for the LeaRN Japanese RPG: Slime Forest Adventure.

SFA can teach you basic Japanese literacy with: katakana, hiragana, and kanji.

It is playable and the first storyline ("Jenk's Adventure", for introductory kanji recognition) is essentially complete. There are free and registered versions available for Windows, OS X, and Linux.

-Darrell Johnson
 (contact by email - all inquiries welcome)

Support development by becoming a member!
Membership benefits start at $1 and $20 is a standard membership.

Study kanji on your smartphone or other web-capable device.

Talk to other Slime Forest players, get help with the game, get help with Japanese, meet new people.

New version: Build 169 (changelog)
Thursday, July 27 2017

Current Features

Free version of Slime Forest Adventure:

  • optional introduction to katakana and hiragana
  • get comfortable with kanji
  • learn to recognized and distinguish a thousand kanji
  • the adventure begins with Episodes 1-4
  • start learning kanji readings with a sample sidequest
  • introductory vocabulary and grammar in Supplementary Training

The Gradeschool Kanji registered version additionally has:

  • start learning to really read Japanese, by learning words written in kanji
  • full sidequest to train and test example words for kun readings
  • master seven powerful spells!
  • additional sidequests coming soon

The Common Use Kanji registered version also has:

  • the adventure is completed with Episodes 5-8
  • expanded set of nearly 2,000 kanji, enough for basic literacy
  • complete readings training through vocabulary, with ~3,000 example words
  • more sidequests coming soon

Slime Forest Adventure

Fight slimes, save a princess, learn Japanese!


Overworld Screenshot Battle Screenshot
Register a Project LRNJ Account Register for more:
$10 for Gradeschool Kanji version
$20 for Common Use Kanji version
(the Common Use Kanji version includes all of the Gradeschool Kanji version content)

Update Notifications

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Mini News

Thursday, July 6

More bug fixes. A helpful long-time user reported some pretty severe problems with the last OS X release which needed to be addressed.

Saturday, June 3

Just a bug fix Slime Forest release today. There were two very bad bugs to do with the "training focus" (the option, on by default, to prevent kanji from showing up in training encounters unless they'll be in the next cave): it didn't work properly for the last cave (requiring players to turn the option off to get to the current limit of the story), and it treated storyless training as if the first cave hadn't been beaten.

I'm working on more, but I thought I had better release the bug fixes now.

Thursday, February 16

I got data recovery done on my failed drive! I once again have the most recent version of the source code to build on.

New version of the Web App today, incorporating the most current data.