Hey, good job making this in a day, pretty impressive! I wasn't quite sure what the point of the two holes were, I saw that the black hole kills you and white hole takes you to next level, but what was the point of the black hole appearing? I also wish that the holes would appear immediately after you collect the orb, so as to avoid waiting. I also wish for more levels, perhaps to test you skills with the timer mechanic, so that you had to actually go fast to get to the orb.
Otherwise tho, the game was really solid, and I really like the art (even if they're assets). It's hard to comment on the design when there's so few levels, but I feel like you have enough mechanics to expand and make interesting levels. The character felt pretty smooth to control, and had the perfect amount of momentum to not be frustrating, but also look correct (and not game-y). So congrats for submitting a game, and I'm proud to provide your 20th rating!