This is a new entry in Aruze’s “G-Series,” which is the line of video slots featuring classic free-game bonus events and big wins based on simple features like stacked symbols and wild symbols.
Ultra Stack Lion is a 50-line game with high-quality graphics and animation. The central feature of the base game is the collection of animal symbols, which appear clustered in stacks on the reels to create multiple wins.
The free-game bonus employs all the popular classic video slot features with a few twists and turns to keep things interesting. Three scattered feature symbols trigger eight free games, with stacked symbols influenced by a “Mini Game” at the beginning. When the bonus is triggered, five cat symbols appear, each showing a cat in silhouette. The player is prompted to select one, which reveals one of the five animal symbols on the reels. The number of symbols depicting the chosen animal is multiplied on the free-spin bonus reels.
The selected animal symbol will appear as stacks in the free-spin round, covering up to several reels for big wins.
Called the “Big Cat Feature,” the free-spin event can be retriggered during the bonus for eight or more additional free spins.
Manufacturer: Aruze Gaming America
Format: Five-reel, 50-line video slot
Max Bet: 250, 500, 750, 1,000
Top Award: 1,000 credits times line bet
Hit Frequency: Approximately 50%
Theoretical Hold: 4%—12.8%