The Sword and the Grail Excalibur Slot by Play'n GO

Five years after the original, the Sword Meter is still the entire game. Four tiers of wild multipliers - x2, x5, x10, x100 - each unlocked by collecting 5 Sword Scatters across your spins. Every tier crossed adds 3 free spins to whatever bonus you're in, so the meter both escalates your multiplier and extends your runway. At the top, x100 wilds on a 20-payline grid mean a single five-of-a-kind line pays 1,500x.

Getting there starts with 3 Sword Scatters triggering the bonus, but the Round Table Wheel adds a twist right at the entry. It spins to set your starting conditions, and the tradeoff is blunt: more initial free spins means fewer swords already banked on your meter, or fewer spins but a head start toward the higher tiers. Either path is a bet on how many scatters you'll land during the bonus itself. Once inside, Grail Wilds are Wandering Wilds - they stick on landing, then drift one position in a random direction each spin until they wander off the edge and disappear. At the x100 stage, even a short-lived Grail Wild on the right payline hits hard.

King's Prizes run alongside everything else. Silver lion-head symbols drop with instant values between 1x and 10x stake, and they multiply with whatever Sword Meter tier is active. A 10x lion at the x100 stage pays 1,000x from one symbol. No bonus buy, so the only entry is through scatters. Part of a broader Arthurian franchise spanning 14+ titles, though this sequel bumped the original's 10,000x ceiling to 25,000x.