3 Pot Surge Slot by Light & Wonder

Picture a Tesla coil cranked up to industrial wattage and you have the visual hook here. Three plasma orbs (red, green, blue) hover above a 5x4 grid set inside a chrome-and-cyan laboratory, with the GRAND, MAJOR, MINOR and MINI jackpot plaques stacked across the top like neon nameplates. Orange flame-letter card royals share the reels with a stubby orange robot, a red-haired inventor and a bubbling chemistry flask. It's L&W borrowing the "3 Pots" naming from Rainbow Riches territory and dragging it sideways into mad-scientist sci-fi - same number, completely different game.

The signature trick is the climbing Wild. Whenever a Lightning Wild lands on reels 3, 4 or 5, it sticks around and shifts up one position on every subsequent spin until it falls off the top of the grid. So a Wild that lands on row 4 of reel 3 gives you four guaranteed spins with that Wild somewhere on the board, slowly walking northward. If it ever overlaps with an Energy Cube, the position counts as both - cube collected, Wild still in play.

Those Energy Cubes are the second engine. Red, green and blue cubes fly into their matching orb when they land, and each cube carries a random chance to fire a feature on the spot - no fixed counter, no accumulator bar to fill. Red cubes can pop the Jackpot Pick: 15 mystery boxes, three matching Energy Symbols win that tier, but find three Upgrade icons first and the prize bumps up the ladder before settling. At a £1 stake the ladder runs £20 / £50 / £250 / £1,000.

Green and blue cubes route into the Free Spins side. Six variants exist depending on which orbs trigger - Mighty, Mega and Super award 6 spins with 3-6, 5-8 or 7-12 placed Wilds respectively. Add a red orb to the mix and you get Ultra, Supreme or Ultimate, which run those same Free Spins alongside the Jackpot Pick at the same time. Wilds during Free Spins occupy reels 2-5 but lose their climbing behaviour, and a bonus symbol can show up to drop extra spins or cash prizes between £0.10 and £110.

No buy bonus, no ante bet, no gamble - everything has to come through the climbing Wild and the orb lottery. Reported ceiling sits at 5,000x stake, which is restrained for a game with this much feature layering, but the combo paths (Free Spins running concurrently with a jackpot pick) are where the real upside lives.