Fortunium Mystery Symbols & Win Booster Features The Mystery symbols feature activates when Mystery symbols (question marks) lands on the reels. It will then reveal a randomly chosen symbol which can be any symbo except the Scatter. To the left of the reelset is
pgทดลอง the Win Booster button. Press this one and all low value symbols will be filtered when the Mystery feature activates which means only premiums and wilds will trigger. This feature costs a 50% increase in your bet size (€1 bet turns to €1.50).