Nice pixel art! I can definitely see potential here, but the jump feels way too stiff for my liking. Also, why is the jump mapped to left click by default? I only have a mousepad, and it feels really weird to execute a jump with it. The fact that you can't remap controls only adds insult to injury. I would recommend checking out LeviRamirez's Gappy trilogy (1, 2, and 3: Gappy's playground doesn't have the same style of gameplay) or Bird Tapper vs. The Purple Platoon for examples of this concept with much better execution. Please keep at it, though, this looks really good so far! Edit: The short jump isn't too much of a problem on its own, but the levels are designed so you have to make almost pixel-perfect jumps. It's kind of a pain for me, but it's possible I'm just bad at the game. The Gappy games are really good examples of this concept worth studying, though, and I do like this game how it its, despite its flaws.