Heidi's Bier Haus Slot by Light & Wonder

Heidi the bartender stands behind the reels in her green-and-white dirndl, her arms resting on the row of red-and-white beer taps that physically cap the six columns of the grid. When the Tapper feature triggers in the base game, she pulls those taps and one to six entire reels flip into full wild reels for that spin. It's a literal animation, not an abstract effect. Wilds substitute for everything except the three coloured Heidis (green, purple, red), so a six-reel Tapper hit on a busy spin can cover the whole screen. A second base-game booster quietly replaces random positions on reels 1-5 with paying symbols before the spin starts, excluding clubs and Red Heidi. The sixth reel is a dedicated feature reel and only ever carries Wild, Hans, Green Heidi, and Purple Heidi.

Free spins trigger from five or more scattered Heidis on adjacent reels starting at reel 1, awarding up to 100 spins on a denser reel set. Every Purple Heidi in that triggering combo turns into a Persisting Wild that locks in position for the entire round. Each free spin can also fire a Wild Hans Spin, dropping 4 to 10 extra Hans wilds onto random positions that aren't already held by a Persistent. And if a Red Heidi takes part in the trigger, Heidi's Wheel spins once before the free spins begin.

The wheel is where the four-tier fixed jackpot ladder lives: Heidi, Hans, Accordion, Pretzel. The chain rule is the interesting bit. Landing on any jackpot slice pays out that jackpot AND grants another wheel spin, so a hot wheel can stack multiple jackpots inside a single bonus before finally settling on Beer (3 Wild Hans Spins) or Extra Spins (5, 7, or 10 added to the round). The Heidi top jackpot pays the headline figure and is the only path to maximum win. Jackpots are fixed multipliers of stake, not progressives, and the meters scale linearly with bet.

One more rule that matters: any free spins round that finishes under 250x total bet is automatically topped up to 250x. Most slots set that floor at 10x, so the guarantee here is unusually generous. The hall behind the reels is a warm wooden Bierhaus draped in autumn leaves, rows of empty chairs receding into golden haze, with the jackpot meters glowing in the top corner.