Also just to address some things you were wondering:
Blue bubbles move at the "normal" speed, green bubbles are faster, yellow/brownish ones are slower.
The score is maxed out at +99, but bouncing on a x2 bubble will give you 198 points for that bounce only.
The hitbox is technically at the feet, which is why your head can go through stuff. I didn't want the player to bounce and instantly hit their head on a mine, though I'm unsure if using a feet hitbox was the best for this.
I have a new build that spawns in slower waves to keep things less chaotic, so I will update the game to that version once the voting period is over.
I couldn't find that game that was similar to mine that you mentioned, so you if happen to find it I would love to take a look! I'd love to see how it plays and what I can learn from it.
Again, thank you so much for playing and reviewing!