The Alter Ego Slot by Pragmatic Play

A moonlit Victorian street sets the stage for this Jekyll and Hyde adaptation. The 3-4-4-4-3 reel layout starts with 576 ways to win, but every Scatter landing stretches that reel by one row - and the expansions stack. Fill all five reels to their 10-symbol maximum and the grid opens to 100,000 ways.

Green Potion Scatters trigger 3 free spins, then swap to Red Potions for the bonus. Each Red Potion that lands during free spins resets the spin counter back to 3 and expands the reel further. Expanded rows stick for the entire round, so late-landing Scatters build on earlier ones. The Dr Jekyll character symbol morphs into Mr Hyde once the bonus activates - a cosmetic shift, but it sells the theme.

A mystery modifier fires in both the base game and free spins, plastering identical mystery symbols across the grid. On an expanded layout with thousands of active ways, a well-placed mystery fill converts dead spins into cluster-sized payouts.

Three buy bonus options (100x, 150x, 200x) skip straight to the free spins round at different intensity levels. The base trigger rate sits around 1 in 321 spins, so the buy option gets real use here. But the expanding mechanic itself is where the tension lives - each Scatter nudges the grid closer to that 100,000-way ceiling, and every spin without one threatens to end the round before you get there.