Rainbow Mania Slot by Habanero

Seventeen paylines reading both directions. It's an odd middle ground between the 25-line bothway template Habanero usually defaults to and a low-line fruit machine, and the prime-number count means the win surface doesn't sit on any neat geometry. With wins resolving left-to-right and right-to-left on every active line, the effective trigger count is 34 directional reads per spin, but the bet stays scaled to 17 lines worth, which is where the higher hit frequency that tempers the high-volatility label comes from.

The free games ladder is the headline mechanic. Three scatters open 13 free spins. Four scatters jump it to 33. A full five-scatter landing reaches 133 spins, which is one of the longest base-trigger bonuses in Habanero's catalog. The Expanding Leprechaun Wild only shows up during the round, locking onto a reel and stretching to fill all three positions when it hits. With bothways evaluation active during the bonus too, an expanded leprechaun on the middle reel can pull double duty on the same spin, completing combinations starting from either end of the grid. Every additional scatter during the round adds more free spins to the running counter through the retrigger.

The Pots of Gold feature works off the special pot symbol when it lands on reel 1 or reel 5 specifically. That positional trigger is the rare path into a cash-prize event running parallel to the standard scatter bonus, which keeps the base game from drying out on dead spin streaks. The Buy Feature chip sits on the left rail at a fixed premium for direct entry to the free games round, and there's a Super Bet option that boosts trigger frequency at twice the base wager. Habanero also runs a multi-tier RTP setup here, with operator-configurable variants at 92.30%, 94.14%, 96.75%, and 97.98%, so the version a casino exposes matters for the long-run math.

The art reads cheerful Irish folk-village rather than tourist-shop kitsch. The grid sits inside a heavy carved wooden frame draped in clover vines and twisted oak branches, with rolling emerald hills, a thatched whitewashed cottage on the right, and a faint double rainbow arcing through the cobalt sky behind everything. Symbols are themed Irish charms (a golden bell with a tiny shamrock at the rim, a brass-strung harp, a green-felted bowler hat full of gold coins, and four-leaf clovers set into Celtic-knot medallions) rendered with the same brass-rope detailing that runs around the cabinet edge. A Jackpot Race meter ticks in the top right, sharing its progressive pot across more than a dozen Habanero titles. The pot drops on any paid spin without a symbol requirement, splitting 60/40 between the top two players in the active race window.