Move with the arrow keys, or click and drag, there are things at 21, 27, 74, 100, and a border
It's similar to the system in getting over it by Griffpatch. But I didn't look at any other code while writing this and got like 3 aneurysms while making this so yeah. I might use this system for a future game, you could also duplicate it for different layers like a background that the player can't interact with.
