I'm struggling to get Start to work for checking the puzzles. It only worked once, and I can't figure out how to replicate it. It mostly just does nothing.
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I didn’t have time to add an error sound for incorrect answers. Are you sure about your answer ?

If yes, you may encounter a solution i didnt find myself so the game cant let you win.
Normally, there should be only one possible solution per level. That is why I added a new wall to level 3 in the HTML version, to ensure there is only one correct answer per level.
( Play Stardust logic in browser/ or download the patched file here: https://roroto-sic.itch.io/stardust-logic-html )