The base game unfolds on a 5 x 4 reel set with 40 win lines. The Wild symbol is exclusive to reels 2, 3, and 4 during the base game but appears on all reels during Free Spins. This Wild symbol can replace all other symbols except the Bonus symbol.
When a Wild symbol appears, the expanding wild mechanic is activated, causing the Wild to expand up or down to cover the entire reel. There are two BONUS symbols: Bonus and Free Spins, the latter being available only in Premium Play. Landing 3, 4, or 5 BONUS symbols will grant 8, 12, or 20 Free Spins, respectively. In Free Spins, the reels contain only 1 Diamond, 2 Diamond, 3 Diamond, and Wild symbols. Free Spins cannot be re-triggered.
Activating Premium Play is done by pressing the PP button, which sets the total bet to £1.00. Within the PP screen, players can adjust their bet to £1.00, £2.00, or £5.00. In this mode, players encounter a 3-reel mini-game, where aligning 3 symbols on the win line triggers the Bonus. The first two reels contain Bonus symbols and Blank positions, while the last reel includes a FREE SPINS symbol showing the potential number of Free Spins and blank symbols.
The FREE SPINS symbol can display 3, 4, 5, 8, 10, 12, 15, 20, 25, or 30 Free Spins. If all three Bonus symbols align on the win line, Free Spins are awarded, along with a panel offering a "START" and Free Spins "GAMBLE" button.