The main bonus, Hell Spins, triggers with three or more scatter symbols or Hellevator Boosters, awarding 8 free spins initially. Hellevator Boosters persist through the bonus round, revealing special symbols immune to the Demon and often carrying multipliers that grow as spins progress. Collecting additional scatters during Hell Spins grants more free spins and boosters, creating a highly rewarding round where all core features – cascades, wilds, xWays, xSplit, Avasplit – are active together.
