"彼女が冷蔵庫に貼り付けた謎の手紙" is a free iPhone game developed by Shizuku Maemura. In this game, your cohabitating girlfriend has left a mysterious letter on the refrigerator. The letter is written in such a peculiar way that it's difficult to understand its contents. Can you help decipher the message?

The game features a likability system, where reading your girlfriend's letter increases her likability towards you. The fate of your relationship depends on your ability to solve the puzzles within the letter. The likability levels range from 0 to 100, with each level indicating a different stage in your relationship.

To solve the puzzles, you need to follow a specific process. First, read the note (problem). Then, think of the answer (word) to the puzzle. If you make a mistake, you can tap on the letters to undo your selection. Finally, tap on the letter panel at the bottom of the screen to submit your answer.

If you're unable to solve a puzzle, you can use hints for assistance. However, be cautious as hints may spoil the answer completely.

This game is perfect for those who enjoy brain training, want to prevent memory decline, or are looking for interesting content for social media posts or video commentary. It's also a great way to pass the time when you're feeling bored.