Thanks for your comment! I watched the video, and you should've gotten the berries because the plants disappear only in three cases: dry earth, rotting, and harvesting. But both rotting and dry earth would give visual feedback, so you certainly harvested them correctly. I genuinely have no idea why it didn't work. Do you mind telling me which browser you ran it in? Or if you ran the executable, or the linux version? I want to try to replicate what happened because I have no idea why it didn't work.
Sound effects are on my list of stuff I'd like to add if I continue working on it:).