• 20 lines, win from 3 matching blocks left to right.
• Payouts shown in line bets (bet / 20).
• Winning blocks shatter, the rest fall — Avalanche.
• Each avalanche increases multiplier: x1 → x2 → x3 → x5.
• In Valhalla multipliers are x3 → x6 → x9 → x15.
• 3+ Gates on adjacent reels from left → 10 free spins.