☛ Use the left and right arrow keys to guide the little guy. You can also use A and D, or click the edges of the screen, to move. The guy climbs automatically.
A Game Boy version, or at least something like it. I was curious if I could adapt the game to a 4-color palette, and I think the result is surprisingly good. I also tried to emulate the 4-channel sound using 3 square wave channels and one noise channel. I cut some corners, so it's not perfect, but it does remind me of Game Boy games, so it'll do. For more notes and credits, see the original project: https://scratch.mit.edu/projects/1307915712