Off By One
A collection of levels themed about restoring the original pattern. With some extra lore to make it spicy. These levels were designed with simply completing them in mind. While you're welcome to go for optimisations, I make no guarantee that you will have an enjoyable time doing so.
Levels are not particularly ordered in any way. You can go in difficulty order, or just pick whatever pattern looks the most appealing to you. I can't stop you.
Enjoy :D