The base code was made a few months ago in Scratch (Body spawning and gravity were the only things existing. You can find the project on my Scratch account) I transferred it to Turbowarp to work on making it into a game!
And yes, I do have a Github account, but the SB3's too big to upload (Several multi-minute-long songs will do that XD) So, there's not really much I can do in forms of making the source code public. Unless I switch the music to a link-played system, which will let me load songs externally. If you do want the SB3, Dm me on Discord! :D My user's that_pi_guy I can upload it to Google Drive and send you the link
I hope this helps!