In true fashion of the spooky season, Halloween Jack™ brings pumpkins and scary characters to live on a frameless game window with ivy-ornamented side columns. Carved pumpkins and a glowing skeleton flank the grid with a cemetery on a dark night in the background. Distant lightning strikes announce the arrival of a thunderstorm. The theme is visible even in the smallest details, starting with a harrowing soundtrack. An intricately designed skull sit on top of the spin button, lifting up on a winning spin to reveal the total payout and ravens are seen flying past the reels while skeletons will rise from the ground on teaser spins. Halloween Jack™ is a video slot with five reels, three rows and 20 pay lines, featuring Wild substitutions, Walking Wilds, win multipliers and Free Spins with stacked and expanding Wilds.

Halloween Jack™ is a high-variance game with an RTP of 96.29%. The win potential in a single spin sequence with walking wilds peaks at a huge 6,000x the initial bet. Entry to the Halloween party is granted for 0.20 to 100 coins per spin. Auto Spin will allow players to set up to 1,000 consecutive spins with a range of options as to when the run should stop. The game is in HTML5 format, making it available for play on any desktop, mobile and tablet device across all OS platforms.

The slot has ten intricately designed pay symbols, starting with the usual 10s to As at the low level. The premium symbols in ascending order are horseshoe, raven, bat, horse, and a female vampire. The carved pumpkin is the Wild symbol, appearing on reels two, three, four, and five only, and substituting for all symbols except scatters and lanterns. It will multiply any win by x3 when it is part of the winning combo. Wins for a single five-of-a-kind range from 1.5x to 50x bet without multiplier, growing to 4.5x to 150x bet with a Wild multiplier. The Wild symbol will appear in different shapes during the Free Spins round. Scatters come in the form of a treasure chest, with a minimum of three needed to trigger the Free spins. Lanterns appear on reel five during the free spins only to unlock extra Wilds.