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)

Enter Member Area
sorry, broken

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.

New version: Build 188 (changelog)
Sunday, August 26 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
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Mini News

Sunday, April 7

Sorry, dynamic stuff on the site's broken for now. You can still download the demo and use the web app. I'll fix it up better, but I have to run now.

Sunday, August 26

Some trainer and difficulty fixes. I think these will make it much more enjoyable to play through.

Wednesday, June 13

Ported to SDL 2, a newer version of the interface library Slime Forest Adventure has always relied on. This should fix various problems, but it was necessary to drop support for older Macs (minimum recommended version is now 10.7, 10.6 might still work).

Thursday, May 10

Improved the kana typing keyboard remapping, made the game start in fullscreen by default on Retina macs (due to performance issues in windowed mode).

Sunday, May 6

A minor release: support for custom keyboard remapping for kana typing, using a configuration file. If this works well for the people who need it, I'll set it up for more general keyboard remapping.

Saturday, April 28

Put out a release to fix some annoyances. Working on something bigger. More soon.

Thursday, March 22

Bug fix release today. Some of the latest changes didn't work properly, including a crash bug. Should be better now.

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.