Copy Editor: A RegEx Puzzle Game
It's a word-puzzle game that incrementally teaches you how to use Regular Expressions (RegEx) to find & replace text. Some of the puzzles add silly restraints for you to work around, and the game has charming NPC coworkers that introduce each challenge.
Manufactured by Castem Co. in Fukuyama, Hiroshima Prefecture: https://mainichi.jp/english/articles/20220407/p2a/00m/0na/010000c