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!

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

New version: Build 164 (changelog)
Monday, October 27 2014
More updates coming soon!

Current Features

Demo version of Slime Forest Adventure:

  • optional introduction to katakana and hiragana
  • learn to recognize and distinguish 200 kanji
  • the adventure begins with Episode 1
  • start learning kanji readings with a sample sidequest
  • introductory vocabulary and grammar in Supplementary Training

The Gradeschool Kanji registered version additionally has:

  • the adventure continues with Episodes 2-4
  • expanded set of 1,000 kanji, with readings training
  • full sidequest to train and test kun readings
  • additional readings training and testing 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
  • complete readings training with ~3,000 example words
  • full sidequest to learn kun readings for 1,000 kanji
  • 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

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


Monday, October 27

With today's release, Jenk's adventure continues in four additional episodes, so it tests the rest of the kanji recognition.

The main game is now complete in rough form, aside from lacking a proper ending. Now I'll be adding sidequests, polish, other characters' stories, and porting it to other platforms.

Friday, October 3

Just a small bug fix release today. Still working on the major release, but I got some good bug reports that I felt should be dealt with.

Tuesday, September 16

I'm working on a major release, which extends the story to an ending, with four new areas. After it's done, I'll go back and add sidequests, and generally polish things up. Sorry for only minor updates this last couple of weeks, I expected to be done sooner.

Monday, September 8

Another minor release. This one changes the spell charging to be more logically based on fighting with the spellbook equipped.

Wednesday, September 3

Very minor release today. Just changes the text entry to be more standard: you can enter しんとう as "shintou" rather than "shinntou", since it's not ambiguous when the "n" is followed by a consonant. You still have to type "anni" to get あんい, since "ani" will be あに. Text entry is still in katakana, to ensure you get enough katakana practice, and as a style thing, because of the association of katakana with very primitive computer systems (like ALL CAPS).

Friday, August 29

New release today. The spells now each have their proper effects, gameplaywise.

Tuesday, August 26

The mailing list / email newsletter has been discontinued. It's just not arriving for half of the people on the list, due particularly to gmail refusing automated mail from (it doesn't even put it in the spam folder, it just refuses to deliver -- apparently the system decided that individually requested password-fix emails were "unsolicited bulk email").

Saturday, August 23

New release today, adds spell charging and casting.