
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.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.14/day in the week to Aug 8 → 0/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 25 chart moves that followed a price cut of more than 20% went a median of 10 places towards #1, and the 2,413 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
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.
Genres
Engagement
Reviews
Themes across 41 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
全40問の一筆書きパズルです。一方通行とかワープとかエリア分けとかの特殊ルールもありますが、やってみれば簡単にわかる程度の仕掛けなのでそんなに難しくはありません。 10問解くごとに、解いたパズルをピースとして暗号の手紙(英文)を埋めていく作業が入ります。と言ってもただ同じ形のピースを入れていくだけですので心配無用。 手紙の内容があれなので「そんな、ひどい… (T_T)」と悲しくなるかもしれませんが、我慢して最後まで解読しましょう~
This one is maybe worth buying on sale. There's very little content (beating the whole game took me barely an hour). This game is better than its predecessor "One Line" by the same devs; it feels more polished and was less frustrating to play.
Media

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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, Portuguese - Brazil*, Spanish - Spain*, Spanish - Latin America**languages with full audio support
Hours played at review time, across 41 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
It's really cheap, and pretty fun. Though at times you'll get an awfully difficult level in-between really easy ones.
Minimalist puzzle game, with a nice aesthetic presentation and beautiful soundtrack which make it quite relaxing. It's not very difficult, but with enough mechanics to not make it boring. And yes, you can find the solution to the puzzles if you check the hearts in the letter. But where's the fun in that?
imagino que seja um bom presente pro dia dos namorados.
I definitely enjoyed this one over the previous iteration [i]One Line[/i] and the message at the end was unexpected and sweet. More mechanics were added to this game and it runs noticeably smoother, but I kind of hoped there was more to the code than just matching pictures....
前作のOne Lineに、恋文の暗号解読という味付けをした続編の一筆書きパズル。暗号と言ってもパズルで完成した図形と一致する図形を合わせるだけの簡単なものだが、明確な目標があるのでゲームを続ける原動力になるし、図形がわかるのでヒントにもなっている(その代わり面数は前作の50から40に減った)。日本語対応はしていないがゲームの進行に支障は無い。手紙の英文はシンプルだし、内容を知りたければスマホのgoggleレンズで翻訳すれば良いかと。
Es entretenido, sencillo, ocasional. Si te gusta los puzzless y estas buscando algo modo chill, recomendadisimo
EU GOSTUMMM É DE PALTINAR, UM AMOR !
Great value for a $1 puzzle game. Levels were a bit easier than the first one, and there were 10 less of them, but it was nice to have a theme. Took me about an hour overall. An undo-to-clicked-square button would be nice since I don't always want to fully reset the puzzle if I get one turn wrong.
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
Players by region
Where this game's players are, estimated from review languages.
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