User created levels are now a thing. Please feel free to open the blank level (from the menu) and then use edit mode (Escape) to create a level if you like. Then you can (s)ave the level as a game number (1 -99999). Other players can (l)oad game numbers (1-99999), and hopefully there can be a good selection of more and more levels to play.
https://lostwords.itch.io/numberlock/devlog/1562909/-lock-user-created-levels