Hey Zenith! I managed to get the official .sb3 file from the Scratch project 'Incredibox: Sprunksters (the final update) port'. I have renamed the file to 'Sprunksters Episode 1' so the full version is properly named and preserved. Just wanted to let you know!
Viewing post in Sprunksters: Episode 2 - The cave comments
It's not a leak, it’s an archive. I am hosting the Demo Release .sb3 file because it's an older version of the game that I want to make sure stays preserved. I got it from a public itch.io archive (https://javidthedev.itch.io/sprunki-files-sb3), so it was already out there. I'm just keeping the demo alive for fans who still want to play it.