The symbols you will land on the reels include blue and red sevens, diamonds, bells as well as low-paying card suites. The wild performs its standard symbol replacement duties. The number of wilds you land on the reels determines the multiplier value you get.
Free Spins
Land at least 3 Bonus (scatter) symbols on the middle reels and you get 7 free spins to start with. As mentioned earlier, the Prime Zone slot enables you to choose the volatility:
Low volatility – Prime Zone covers reels 2-3-3; max multiplier x5
Medium volatility – the Prime Zone covers reels 3-4-5; max multiplier x15
High volatility – the Prime Zone is moving with every spin; max multiplier x20
Bottom line
The Prime Zone is a back to the basics slot and players used to feature-rich games might consider the gameplay off-putting. To cut a long story short, the Prime Zone is a hit or miss. It all depends on what kind of slots you prefer.