Prime Zone is a classic-looking video slot game from Quickspin that has 5 reels, 3 rows and 10 ways to win. It is available to play on all devices and platforms, and you can place bets as high as you want. Here are some of the game’s features and mechanics:

Symbols:
- Wild symbol: pays 100x your stake for 5 on a payline
- Red 7: pays 50x your stake for 5 on a payline
- Blue 7: pays 40x your stake for 5 on a payline
- Diamond: pays 25x your stake for 5 on a payline
- Bell: pays 20x your stake for 5 on a payline
- Card suit symbols: pays either 10x or 5x for 5 on a payline

Bonus features:
- Multiplier wilds: can land on any of the 5 reels and can boost your winnings by adding multipliers up to 5x in the base game.
- Free spins feature with 4 different options: trigger when you land 3 scatter symbols on reels 2, 3 and 4 at the same time. You get 7 free spins and can choose between 4 different options with different volatility, max win potential and multiplier boost:
1. lower-medium volatile option with 3 wild symbols added in the zone that covers the first 3 reels and max win up to 1,076x per spin
2. medium volatile option with 2x multiplier, 3 wild symbols inside the zone of reel 2, 3 and 4 and a max win up to 1,431x per spin
3. high volatile option with 3x multiplier, 3 wild symbols added inside the zone of the last 3 reels and max win up to 2,337x per spin
4. Mystery option with varying volatility and a shifting zone between the reels. Comes with a multiplier between 1x and 4x and a max win up to 2,685.5x per spin

Max win:
- Theoretical max win: 5,000x
- Realistic max win: 2,685.5x (only reached in perfect conditions)
- No progressive jackpot available

Playability:
- High-quality graphics and easy to use interface
- Can be played on both desktop and mobile devices (Android and iOS)
- Autoplay feature available

Prime Zone is a nostalgic trip back to classic brick and mortar slots with an added bonus of modern features and mechanics. The multiplier wilds and free spins feature with 4 different options make it an exciting game with ample opportunities to win big. The theoretical max win is impressive, but the realistic max win is still considerable. Play for free or for real money at selected casinos to experience this hybrid game that has captured the best of both worlds.