Wild Booster

Wild Booster is a 5x3, 20-payline slot from Pragmatic Play released in April 2021. 96.47% RTP, high volatility (5/5), 5,000x maximum win. The base game plays standard paylines with a wild symbol that can randomly apply multipliers up to 100x to any spin. Three or more diamond scatter symbols trigger the free-spin round, with the player choosing between two progressive multiplier paths at the trigger screen.

The Mega path starts at 2x and escalates through 5x, 10x, then 100x — each stage awards five free spins, and every five scatter symbols collected during the round upgrade the multiplier to the next tier. The Ultra path starts at 3x and runs through 6x, 12x, then 50x via the same scatter-collection upgrade mechanism. Choosing Mega targets the 100x top-tier multiplier; choosing Ultra starts higher but caps lower. Within any stage, all wins in those five spins carry the active multiplier.

The scatter-collection upgrade structure creates a compounding risk within the bonus round. Collecting five scatters to advance from the 2x Mega stage to 5x is the first decision point — if the scatter count falls short, the round ends at the floor tier. A full Mega run that collects enough scatters to reach the 100x stage, then lands a winning combination under that multiplier, is the path to the 5,000x ceiling.

The 5,000x ceiling requires the 100x multiplier active on a winning spin with full grid coverage of the top symbol — a rare confluence. Most sessions that reach the 100x stage will produce meaningful but sub-ceiling wins. Against comparable scatter-collection escalation slots, Wild Booster's two-path choice adds strategic texture without overcomplicating the mechanic. The 96.47% RTP is competitive for a 5/5 volatility title.

Verdict
A 20-payline slot with a two-path multiplier escalation in free spins — Mega tops at 100x, Ultra at 50x. Choose at the trigger, collect scatters to upgrade, and the 5,000x ceiling opens at the top tier.