Diamond Symphony DoubleMax

Bulletproof Games pairs a neon-lit orchestra theme with the DoubleMax cascading-wins engine for Diamond Symphony DoubleMax, built on a 5x3 grid with 20 fixed paylines and wins formed from three to five of a kind.

Low-value pays are four coloured musical notes and a treble clef, worth 1x-2x the stake for five in a row, while a saxophone, cello, piano and diamond form the premium set, climbing to 2.5x-10x for five matching symbols. A conductor wild appears across all five reels, standing in for any paying symbol and carrying the diamond's payout when it completes a line by itself.

After each win, the involved symbols clear from the grid and the reels above cascade down to fill the gaps — but before that happens, one of the cleared spots is seeded with a fresh wild, setting up the next combination through the Cascade+ mechanic. Every time a win pops, the DoubleMax multiplier doubles and carries into the following cascade in the same chain, though it drops back to zero at the start of each new base-game spin.

A trail beneath the reels tracks these pops step by step, and landing on step five, six, seven or eight hands out 7, 10, 12 or 15 free spins respectively; the trail itself resets whenever a paid spin lands. Switching on Encore Mode raises the stake by half but more than doubles the odds of reaching a free-spin step, and it turns steps three and four into Encore positions — stopping there triggers a respin instead, giving the trail another shot at climbing higher, with a second Encore able to award a further respin.

Once the trail lands on a qualifying step, the free spins round opens, and before it begins players can choose to gamble the spins already secured for a shot at the full fifteen or bank what they have and start immediately. The DoubleMax multiplier keeps building through the bonus round, and further free spins can still be picked up from the trail while it plays out. Outside of the base game, the round can also be bought directly: 100x the stake buys 7-15 free spins, while 200x guarantees a tighter range of 12-15.

Diamond Symphony DoubleMax carries a medium-high volatility rating, a 25% hit frequency and a maximum win of 20,000x the stake, with bets running from 0.20 to 50 per spin. The default RTP is 96%, and Bulletproof Games also ships configurations at 94%, 90.5% and 86% for operators who choose them.