Ultra Stack Bison Instant Trigger Demo Slot by Aruze Gaming Free Play

Ultra Stack Bison Instant Trigger is an online Slot from Aruze Gaming.

Quick Facts

- Layout: 5 reels x 3 rows

- Paylines: 50 fixed

- Key mechanics: Ultra Stack feature, Instant Trigger, Wheel Spin bonus

- Special symbols: Bison (Top Symbol), Scatter Feature symbols, Wilds

How the Game Plays

Ultra Stack Bison Instant Trigger takes players to the vast American plains, where the majestic bison reigns supreme. Developed by Aruze Gaming, this title is part of the popular Ultra Stack series, known for its high-density symbol stacks that can cover entire reels. The gameplay is centered around the 5x3 grid, where various wilderness icons like wolves and eagles appear alongside the high-paying bison. Winning combinations are formed by landing matching symbols across the 50 fixed paylines, starting from the leftmost reel.

Free Spins Explained

The free games feature is the heart of the experience and is triggered by landing specific feature symbols. Before the round begins, the game uses a special reel set where the number of bison symbols is significantly increased, boosting the potential for full-screen wins. Depending on the play option selected, players can earn a varying number of free spins, with the possibility of retriggers during the round to extend the bonus play.

Instant Trigger & Wheel Feature

This version of the game includes the unique "Instant Trigger" mechanic. Players can choose to play at higher bet levels which provide the opportunity to trigger the bonus feature more frequently or even automatically. At these higher play options, a wheel spin is often used at the start of the feature to further increase the number of top symbols on the reels, maximizing the stack potential for the duration of the bonus.

Click the Play for Free button to load the Ultra Stack Bison Instant Trigger demo, test its features and payouts and decide if it is a game you enjoy.