The mechanics of scaling the character have no application. It pays to become as small as possible to advance easily in the level. You could make it so that the smaller you make the character the more the speed increases and vice versa the larger you make the character the more it decreases, and I would add a score or time system so that completing the level becomes a speed challenge.

Good concept, feels a bit incomplete. No notable advantage to getting bigger, just kept smaller through levels.

The core gameplay is pretty fun, reminiscent of games like geometry dash but with the scaling mechanic. It would've been nice if there was some explanation for how to get past the angry red faces, it took me some trial and error to understand them. And like the other comments have already hit on, it'd be nice if there was more reward for being bigger. Perhaps you can move considerably faster at that size? Overall, nice music and level design.

It felt a bit slow, and I agree with the others, there should be a reward for scaling large. It is on the right track though!

It would be cool if there were some risk versus reward in choosing between the small and big size. If you got some kind of benefit for playing risky and getting as big as possible while still avoiding the obstacles, you could create an incentive for increasing your scale more often. But I like the concept! You definitely have to be sharp to get past the enemies in level 3.

Cool concept, though it seemed like there was little reason not to just go small the full time and have an easier job navigating around obstacles. Maybe if being smaller made you faster so it was harder to steer?