wow, really cool graphics and sound! how did you get that bounce effect? i tried adapting it into a (unfinished) game:

Xmas

by Maximilio64

Cart #54057 | 2018-07-10 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

haha nice!

all balls are linked with springs. they're not spawned at stable positions, so they wobble by themselves from the start. they would stabilize in a minute, so a random ball is slightly punched every 2 seconds to keep the wobbling. if the punch is too strong the springs break and the ball pops off (try changing the bump_mag var)

@zep:
there seems to be a bug on the dates, the op should be from 2016-12-??, edited 2017-12-17...