15 Coins is a Hold the Jackpot slot from Wazdan with a 5x3 grid. The goal is to fill the middle row to activate the Hold the Jackpot Bonus. The function includes jackpot symbols, accumulator symbols, mystery and mystery jackpot symbols.
The Cash Infinity sign can help you with that, but only if it occurs in the centre row. It has a cash prize value ranging from 5x to 10x your stake and remains sticky until its winnings are added to your total in the following bonus round. It remains sticky in any place in the base game, but it must be on the middle row to trigger the function.
The Hold the Jackpot Bonus Round is triggered when the middle row contains any type of bonus symbol, and the triggering symbols, as well as any sticky Cash to Infinity symbols, become sticky on an otherwise cleared grid. You begin with three respins, and the tally resets with each new bonus symbol you land. All bonus symbols appearing in the feature become sticky as well.
Regular cash bonus symbols payout cash rewards ranging from 1x to 5x your stake, but the Mini, Minor, and Major jackpot symbols payout 10x, 20x, and 50x, respectively. The Accumulator Symbol accumulates all prize values, including cash and cash to infinity symbols, and then multiplies the sum by a random multiplier ranging from x1 to x20.
You can also get Mystery Symbols and Jackpot Mystery symbols. The standard Mystery Symbol transforms into a random extra symbol at the end of the feature.
The Jackpot Mystery sign transforms into one of the three jackpot symbols listed above. If you can fill all 15 spaces with any symbol, you'll win the 1,000x Grand Jackpot. If not, the whole of your winnings is awarded after the bonus round expires. This occurs when you run out of respins before filling all 15 places with symbols.
