About this game Jelly Rumble
Development notes
Cut first, then deal
A puzzle is made by backtracking through the mold, always covering the first empty cell and favouring larger shapes, within a step budget. That cut becomes your tray, and the cut itself stays on the server as the answer. A one-cell piece is allowed only after 30 attempts fail.
Fixing an upside-down difficulty curve
With random cuts, a 300-game simulation found Legend molds with a median of 5 ways to fill, a quarter with 27 or more and some above 500: pieces fit almost anywhere. The generator now counts each cut's solutions (swapping identical pieces counts once) and keeps the first with at most 4, 3, 2 or 2 ways from Chewy to Legend, or the fewest in 24 tries, cutting the same mold up to 10 times so large molds still appear. Legend's upper quartile fell from 27 to 2. Daily molds use this from 2026-10-10, so earlier days kept their puzzles.
Making hints a real choice
Hints used to be free, and Time attack rewarded speed alone. The target time is 3 seconds plus 2.5 to 5 seconds per piece by level plus 0.3 seconds per cell, and the server, not the browser, awards stars. Since combos can raise a score by half, Time attack ranks the new rules on a separate board.
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