Oh, haha I must've been tired last night. I literally didn't even consider how many tiles the GB shows at one time. So yeah, right now it's 8x8 tiles, so really I'll end up with more than twice as much screen real estate, which is fab. Thanks for pointing this out! It means I'll have to remake a bunch of the tiles, but the end result will be much nicer.
I'm using Unity, actually, and I'm fairly certain that the collusion bump is a result of having the camera as a direct child of the player. This is just a placeholder so I could test the movement, I fully expect to resolve it when I actually get around to writing the camera script.
I'll hop on the discord when I get home this afternoon (~2pm CST). If someone is interested in helping with sfx, music, or sprites, I'd definitely be interested in collaboration.