Adorable art and so satisfying! Was a little confused on how the upgrade menu came up, but then I noticed it's based on health. Horizontal movement felt sluggish, just ended up going straight down the entire time. Getting multiple bounces bouncing off each other felt SO GOOD. I had a tough time choosing upgrades and ended up just buying damage -> health -> anything random I could afford. When the pacing matched a new biome to a new upgrade it felt great.
"Ending" was fun, well done!