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 demo 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 costs $15 and gives access to the full Registered Version of Slime Forest Adventure.

The Web App is a supplement to the game for 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 176 (changelog)
Saturday, March 17 2018

Current Features

Demo version of Slime Forest Adventure:

  • introduction to katakana and hiragana
  • sample lesson in kanji
  • the adventure begins with Episode 1

The Registered version additionally has:

  • get comfortable with kanji
  • learn to recognize and distinguish nearly 2,000 kanji
  • readings training through vocabulary, with ~3,000 example words
  • the adventure continues with a main quest and sidequests
  • introductory vocabulary and grammar in Supplementary Training

Slime Forest Adventure

Fight slimes, save a princess, learn Japanese!


Overworld Screenshot Battle Screenshot
Register a Project LRNJ Account Register for more:
$15 for Registered version

Update Mailing List

Enter your email address to receive notification when new versions of Slime Forest Adventure come out:

Anti-spam question: What language does it teach?

If you have any problems with the mailing list, please let me know at:

Update Notifications

Follow Project LRNJ on Twitter Project LRNJ Non-Member RSS Feed

Mini News

Saturday, March 17

New version out today. I think this improves a lot on the training usefulness and general enjoyability. One of the most obvious changes is that it now switches randomly between four common styles of font. Review and reinforcement scheduling have been improved, and it should be easier to make progress through the caves.

The update mailing list has been reactivated (you can sign up for it on this page or in account configuration in the member area). I've fixed some of the technical stuff that was a problem for spam filtering, so hopefully this should stay available.