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Bally Technologies


This video slot showcases the latest version of the Bally Pro Series video format and cabinet, featuring two 22-inch monitors in a curved configuration. Mysteria includes an eight-round bonus event played out on both screens, and the “Mysteria Wild Bonus” feature appears randomly during the primary game.

The base game is a five-reel, 30-line video slot with stylish graphics depicting a magic theme. “Key” symbols on the first, third and fifth reels trigger the “Puzzle Box Bonus,” in which the top screen displays a puzzle board that adds symbols to bonus reels for an enhanced free spin.

When the key symbols land, the player picks one of them to reveal the number of bonus rounds, up to a maximum of eight. In each round, the blocks of the top puzzle spin to award symbols on reach of the middle bonus reels on the other screen. The event occurs every 129 spins on average, for an average award of 34.69 times the total bet.

The Mysteria wild feature occurs once every 41 spins on average. A box symbol on the middle reel will spin to reveal two to eight wild symbols, which are distributed among the reel spots for a bonus win. The average pay on this is 16.79 times the total bet.

According to the manufacturer, the base game top award of 1,000 credits times the line bet, triggered by five wild symbols or five eye symbols on an active payline, occurs every 304 spins, on average, with 30 lines played.

Manufacturer: Bally Technologies
Platform: Alpha Pro
Format: Five-reel, 30-line video slot
Denomination: .01 through $100
Max Bet: 400
Top Award: 1,000 credits times line bet
Hit Frequency: 35.63%
Theoretical Hold: 4.08%—14.49%