Tombstone Slot by Nolimit City

This is where the Tombstone line actually started, and where Nolimit City first put the xNudge mechanic on a footer badge as a single-trick identity. Seven years and three sequels later, the engine here is still the simplest expression of the idea. One mechanic, three tiers of free spins, no xRIP, no Buy menu wrapped in twelve different prices. The math runs through one symbol and the paths into the bonus.

Outlaw Wilds are the only special on the board worth tracking. They're 3-row-high stacked bandit Wilds that can only land on reels 2, 3 or 4, and they always nudge until they're fully visible inside the window. Every nudge step bumps a running multiplier by +1, and every additional Outlaw on screen tacks another +1 on top. So one fresh Outlaw landing two steps off the visible window already pays at x2 before anything else interacts with it, and two stacked Outlaws on the same spin chain into x4, x5, x6 territory without any free-spin involvement. Wilds substitute for everything except the Scatter and the two Badges, which is the part that lets a deep nudge sweep the ways count.

Three trigger paths split off the base game. Sheriff Badge on reel 1 plus Marshall Badge on reel 5 grants 3 Justice Spins, with any Outlaw Wild that lands sticking to its reel for the duration. Three Scatters open the headline route, Gunslinger Spins, which run 10 rounds and lock the Outlaw multiplier sticky for the entire feature with no ceiling on how high it climbs. One extra Scatter during the round adds +1 spin, two Scatters add +3. The elite trigger is both Badges plus three Scatters on the same spin, which awards 12 Bounty Spins combining the sticky Wilds from Justice with the unlimited multiplier from Gunslinger. That's the path to the 11,456x cap. The reels sit behind a sun-bleached saloon porch with a desert horizon visible through the gaps, the TOMBSTONE crest pinned across the top in distressed western type with twin crossed revolvers stamped under it, dynamite sticks and dollar sacks doing the low-pay duty alongside the carved wooden royals. The xNudge family has expanded into half a dozen variants since this game shipped, but for a clean look at the original idea before the 16,480x sequel rebalanced the numbers, this is the entry to play.