indiegame.fan
One Line: Letters and Codes header art

One Line: Letters and Codes

You have just received a coded love letter! In this minimalist puzzle, you will have to draw a single line to fill the entire board. At each level solved, get a code to reveal a piece of the letter. Gather the codes, read the letter and discover the message.

Steam Page
Release
March 10, 2022
4 years and 145 days ago
Steam Reviews
Very Positive68 reviews94.1%

Does this feel indie?

Vote based on whether this game feels indie to you. You can change your vote at any time. Results earn an IGF score after 10 accepted votes.
No votes yet
Vote on More Games
Game contextLatest: IGF Team
ContextThe evidence factors used to assess whether this game belongs on IndieGame.Fan.Status
Notes
Latest Contributor: IGF TeamEdit notes
Updated: Jul 11, 2026Developer scaleThe operating scale of the game's developer.
Updated: Jul 11, 2026Publisher scaleThe operating scale of the game's publisher.
Updated: Jul 11, 2026Publisher statusHow the game's publishing relationship is classified.
Search Google: How is One Line: Letters and Codes and Climbing Goat Games funded?FundingThe known source of funding behind the game.
Search Google: Who controls the creative direction and IP for One Line: Letters and Codes and Climbing Goat Games?Creative controlWho appears to retain creative control of the game.
Updated: Jul 11, 2026Release statusWhether and how the game has been released.

Media

9 items

About the Game

You just received a love letter! But it's written with codes...

To read it you will need to solve the puzzles and get codes, which will serve to reveal the words of the letter. Each code is a word. Can you decipher what is written in the letter?

Use your mouse or arrow keys to draw the line. Fill the entire board and solve the puzzle.

Did something wrong? You can go back easily. Or just right click to delete the line wherever you want.

After solving the puzzle you will get a code.

Find the code on the letter and discover the secret word.

Features

  • No tutorial. Straight to the game.

  • Minimalist design. No score, timer or pressure. Solve the puzzle in your time and enjoy the game experience.

  • 40 unique levels, with progressive difficulty.

  • Get a code at the end of each level to reveal a piece of the letter.