Crank It Up Slot by Pragmatic Play

Free spins split into two distinct phases. During the first phase (10, 15, or 20 spins from scatters), boombox wilds land on reels 2, 3, and 4 and mark their grid position. If another wild hits an already-marked spot, the multiplier on that position steps up through four tiers: 2x, 3x, 5x, then 10x. The base game itself is straightforward 20-payline action with nothing unusual happening.

Phase two is where the design pays off. Once normal free spins end, three special spins begin. Every marked position becomes a sticky wild carrying whatever multiplier it accumulated during phase one. No new wilds can appear, so the board is locked in - the grid you built is the grid you play. When multiple sticky wilds sit on the same winning line, their multipliers add together rather than multiply, but filling reels 2 through 4 with 10x wilds still opens the path to the 10,000x cap.

Scatters can retrigger during normal free spins but not during the special spins. The buy option at 80x bet skips the base game entirely and randomly drops 3, 4, or 5 scatters on the trigger spin. A neon nightclub backdrop frames the action with platform boots, gold microphones, headphones, and funky shades as the premium symbols. The disco guy with a gold chain standing beside the reels sets the mood.