I like the concept (and I don’t think I knew about Craiyon, thank you for this!). And also the funky music. ;) As for the visual style, the sort-of transparent/gleaming aspect can make you think of ‘retro’ arcade games. :) Also enjoying how this happy little green worm fellow looks!
Just one thing, which is more game-jam-related: I notice you centered the game around the time theme (which is a theme I like in itself, by the way), but my personal interpretation of Mini Jam (seeing its description and criteria) is that there should be some kind of twist related to the constraint, while the theme is an addition. You did comply with the constraint, but your twist is clearly on the theme side rather than on the constraint side (although you did think of the automatic acceleration).
This remark is once again totally related to the specific context of Mini Jam rather than a criticism of the game itself! I am wondering if you had trouble finding a constraint-related twist/idea, or if this was a deliberate design decision on your choice. Just curious!
(I know I had trouble finding an idea that would be specific to the limitation, and managed to have one that I am happy with; started a bit late, so I will — once again XD — submit late. I think time is easier to have ideas and inspiration for, which could explain why several people seem to have chosen it as their primary target.)