That's an interesting mechanic! Collecting jumps can lean both into platforming and puzzles, and as a matter of fact I think you could've leaned more into the puzzle aspect as most levels were pretty straight forward (that being said, making levels in a four day jam is no easy task). As per the execution, I think it's a game put together very nicely, with a fitting calm atmosphere and good feel to it. The player jump feels nice overall, and it's a bit fiddly to get the jump that just clears the gap - but I find that rewarding! One thing I will say is that I think just tapping the jump button should give for a jump at least high enough to get up a single tile. Overall good job!