Vikingdom Slot by Genii

Vikingdom drops you at the gates of a Norse fjord village, with the 5x3 grid framed by a chunky wooden longhouse doorway, heavy timber posts and iron-chained pennants hanging from the lintel. Behind the reels, thatched-roof longhouses cluster at the water's edge while viking longboats with red-and-yellow striped sails sit moored on the shore. The gold gothic logo even swaps the dot on the "i" for a horned helmet. It's a darker, fantasy-RPG Norse look than you'd expect from a Saucify-engine legacy build, and it suits the Vikings theme nicely.

The base game runs on a single stacked Wild that Genii calls Double-High, a 2-tall block that pays itself up to 2,000 coins for five-of-a-kind. Any win involving that Wild gets a built-in x2 multiplier baked straight into the symbol. Ten line symbols round it out, led by a Viking Warrior King at 1,000 coins for five, then a Celtic shield, crossed axes, crossed arrows, an iron-bound chest and Mjolnir, with filigreed A/K/Q/J propping up the bottom. And yes, Q and J pay identically at 18/9/5, which is a slightly lazy paytable quirk.

Hit three, four or five scatters and the slot completely rewires itself for free spins. Both the standard Wild and the Scatter are stripped out. In their place you get an Expanding Wild that lands only on reel 3 and stretches across all three positions, plus a Random Wild that drops onto a non-reel-3 spot every single spin. So every free spin guarantees at least one wild placement, and any win touching a wild keeps its x2, stacking with the round's x2 for an effective x4 on those lines. It's a genuinely different mode, not the usual reskin.

You get 8, 12 or 15 spins for 3/4/5 scatters, with bets running $0.01 to $50.00 across player-selectable 1-40 paylines. But there's no retrigger, no bonus buy and no gamble, so once the spins are done, they're done.