One Line: Letters and Codes
Offers
- −60%$0.79View Offer
Trailers & screenshots
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About One Line: Letters and Codes
One Line: Letters and Codes is a puzzle game about deciphering a coded love letter. You solve puzzles to earn codes, then find each code in the letter to reveal a secret word.
Solve the puzzles
Use the mouse or arrow keys to draw a line that fills the entire board. If you make a mistake, you can go back or right-click to erase the line from any point. Each completed level gives you a code that reveals part of the letter.
Levels and design
The game has 40 unique levels with progressive difficulty. It has no tutorial, score or timer, so you can solve each puzzle at your own pace.
Frequently asked questions
The best price for One Line: Letters and Codes is $0.79 at Steam. 7 shops have an offer that activates in your country.
Some are. This page only shows offers that activate in your country; offers for other regions, or with no stated region, are left out. To see the offers for another country, change your country at the top of the page.
Every key we list activates on Steam. Redeem the key there and One Line: Letters and Codes stays in your library for good.
Yes, with a small risk. Publishers create keys to sell in other shops, which is why a key can cost less than in the official store, and once you activate it the game is yours to keep, just like a store purchase. On average 1–2% of keys fail, so check the shop's buyer protection before you buy: the official store does not refund keys bought elsewhere.
The minimum requirements for One Line: Letters and Codes are: Windows 7, 4 GB RAM, 300 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. One Line: Letters and Codes is a single-player game.
Yes. One Line: Letters and Codes is the full base game. You need nothing else to play it.
Buy One Line: Letters and Codes 55% cheaper than on Steam.
One Line: Letters and Codes is available for 55% less in shops such as YUPLAY or Instant Gaming.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.











