Citrus K.S. - Me!
Evi - Hugged me after I explained my ideas to her, which singlehandedly made me want to make this.
Clairebun - Sonic Drop Dash and Double Jump mod, which served as the base. Also, Multi Spin, which inspired the Marble Drop.
SweetCoffy - UrMom-Entum, which served as the basis of wallhits, both in code and parts of the visual. Also I used its double jump effect, because that looked nice.
Krabs - Rebound Dash, particularly its effects, which were used in both wallhits and the Marble Drop.

Sounds used:
- Anime_Swish_Sound_8 - Fizz Sound
- billard ball clack - Za-Games

Go play all three of the aforementioned mods! They're great in their own right. UrMom-Entum actually served as the inspiration for the whole mod, and I would have simply kept playing it instead of making this if I didn't play it so often that I could beat the game absentmindedly using it.