Gem Jam glitters from top to bottom. A starry purple backdrop sparkles behind the gold-framed reels, three giant gems rest above them on a pile of diamonds, and a colourful prize wheel peeks out from the top left. A jackpot ladder down the side lists Grand, Major, Minor and Mini. I played with a 1,000 balance at a 2.00 total bet.
Theme and Gameplay
The design is clean and bright. Deep blue card ranks from 9 to A sit alongside glowing gold coins showing cash amounts, a sparkling Wheel Bonus symbol and the three feature gems: a green emerald for Extra Spins, a red ruby for Symbol Upgrade and a blue sapphire for Grow Reels. At a 2.00 stake, the jackpots read Mini 50, Minor 125, Major 1,000 and Grand 12,500.
Slot Features
Lines pay from reel 1 across neighbouring reels. Coin symbols display prizes drawn at random when each spin begins, sometimes jackpot or bonus amounts. Wilds pick up a random 2x, 3x or 5x multiplier each spin and apply it to any win they help complete.
The Wheel Bonus lands on one wedge: a feature, a jackpot or a cash prize worth 1.25x to 18.75x the total bet. Winning one or more features from the wheel starts the Extra Spins Bonus, with every feature won staying switched on until the spins run out. Grow Reels stretches each reel to five rows and 50 lines, while Symbol Upgrade adds a collection meter that gathers wilds and improves with each level. Any further feature taken from the wheel mid-bonus adds five more spins.
RTP and Win Potential
Bought games are available too, and in those, any gem that appears may trigger its feature. With the Grand heading the ladder and wilds worth up to 5x, I’d call the volatility medium-high.
My Thoughts On This Slot
Gem Jam is polished and clear, and it makes its wheel genuinely exciting. Its trio of features works well together, and watching the reels stretch to 50 lines never gets old. The jewel styling is bright without tipping into garish.
All those interlocking rules do need a little patience at first, though.
