Ivanhoe Slot by ELK Studios

Seventeen paylines on a 3x3 grid. Most three-reel slots manage five to nine lines at best, so that count already puts Ivanhoe in odd territory. The extra lines mean fruit symbols, BARs, and red 7s connect in diagonal and zigzag patterns that would not exist on a standard layout. Red 7s pay 30x, the two BAR tiers sit at 5x and 10x, and the fruit (watermelon, lemon, orange) covers 0.8x to 1.6x. Only three-of-a-kind counts. No partial wins, no two-symbol payouts.

A Crown symbol sits permanently on the middle reel. During base spins it pays nothing and blocks a position - one of nine cells just gone. But once three red-and-white shield symbols line up on a payline, the bonus round starts and that Crown flips into a Wild for the duration. Five free spins at Level 1 with a x2 multiplier, and from there you are chasing coin thresholds: 2,500 to reach Level 2 (x3), then 8,000 for Level 3 (x4), 20,000 for Level 4 (x5), and a steep 81,000 to 300,000 gap for the final Level 5 at x6. Each level adds 3 spins and every bonus shield that lands during the round gives one more. Wins and leftover spins carry forward between levels, so the multiplier compounds on accumulated totals. A red 7 hit at Level 5 pays 180x. Getting there is another story - most rounds stall at Level 2 or 3 before spins run out.

The whole game sits inside a sepia-toned medieval castle, with stone walls, an archery target dummy bristling with arrows on one side, and two armored knights blowing herald trumpets above the reels. A mosaic-tile banner glows in amber and red at the top. Below the grid, an ornate scroll cycles through names like "Wilfred of Ivanhoe" - a nod to Walter Scott's 1820 novel that most fruit machine designs would never bother referencing. ELK built this in 2017 as a portrait-first mobile game, and the compact layout still works in that orientation. No buy bonus option, so the five-level progression only triggers organically. For a three-reel game with a literary skin, the bonus structure carries more depth than the genre usually allows.