Three pots sit simmering beside the reels in green, red and purple, and they aren't decoration. They're the instructions. Whichever colour of scatter turns up decides which version of Stack N' Hit you get, and Lightning Box built the thing so you learn the mechanic by looking at the artwork instead of reading a rules panel.
Green means Yummy: four respins instead of three. Purple means Spicy, which puts a chilli symbol in play whose prize gets added to every pot on the grid. Red means Upsized, and that one splits the feature across two grids at once. They stack. Land all three colours and you're playing four spins, chillies and a double grid together. One, two or three scatters may trigger the feature; four or more always will.
Inside it, scatters become steamed buns carrying prizes, random extras top the grid up to somewhere between three and ten, and every fresh bun or chilli resets the counter. Then there's the column rule, which is genuinely clever. Fill a column, collect its prizes, and the column empties, freeing the space to fill again. Each cleared column lights a pepper above it. Light all five and the GRAND is yours.
About those jackpots, because this is where honesty matters. MINI and MINOR are fixed, at 10x and roughly 21.36x your total bet. MAJOR and GRAND are real progressives, re-seeding at 80,000 and 500,000 credits, with 0.35% and 0.40% of every wager feeding the pools, and the client says plainly that there is no upper limit on progressive jackpot values. So there's no max win number here. None is published, and none should be invented. One more thing before you open the demo: progressives can't be won in fun play at all.
Now the complaint. The base paytable is almost nothing. Five zongzi, the premium symbol, pays 0.84x your stake. Not 84x. Under one. Actually, that's deliberate, since all the return sits in the feature and the jackpot tiers, but a cold stretch on 243 ways feels very cold indeed. The panda wild softens it slightly, nudging out to cover a full reel whenever he's part of a win, though he only shows on reels two, three and four and won't substitute for pots or scatters.
RTP is 95.52%, a single figure, with no buy and no ante. Bets run $0.44 to $55.00 across thirteen steps.