Bubble Bubble 2 Slot by RealTime Gaming

Wanda steps in for Winni this time, and the math changes more than the mascot. Where the 2015 original capped at 3,000x, this one runs to 50,000x on the same 5x3 grid with the same 50 paylines. The difference sits entirely inside the Witch's Brew Bonus and a rebuilt three-tier free games structure, not in the base game pay structure, which still funnels wins through line-only hits on fixed lines.

The bonus trigger is the Witch's Cauldron scatter, and three or more opens the ingredient-pick round. You tap cauldrons to reveal ghosts, spiders, and potion ingredients that decide which of three free games tiers plays out. The lower tier runs more spins with mild wild behavior, the middle tier trades spin count for extra multipliers, and the top tier goes short and volatile with the Witch Wild expanding across entire reels and carrying a x3 multiplier. The Ghost Symbol transformation happens during features: ghosts appear on the reels and then morph into matching premium symbols after the spin resolves, which turns near-misses into line hits more often than you'd expect from a 10-year-old RTG engine. Retriggers are possible in each tier, though the math is stingy on the top one.

In the base game, the Bubble Bubble 2 logo is the wild and substitutes for everything except the scatter. It doesn't expand outside the free games, so the base game plays flat until the cauldrons start collecting. Visuals keep the gothic cartoon look of the original: a dark purple moonlit graveyard, a crooked witch's hut on the left, gnarled bare trees on the right, cobwebs stretched across the corners of the reel frame. Symbols are the usual Halloween set, spell books titled "The Joy of Hex", red potion bottles labeled "Drink Me", bubbling cauldrons with green froth, candelabras, and skull rams. It's playful rather than scary, and the green neon title sits above the reels like a carnival sign.

No buy bonus, no ante, no gamble. Just scatter-path access to a bonus that lives or dies on which cauldron you tap. The 50,000x ceiling looks enormous for an RTG release of this era, and it does require hitting the top tier with the right Witch Wild sequence, so most bonus rounds will land well short of that number.