Booming Games Slots

Land a threshold number of special coin symbols — usually six — and they lock in place while the rest of the reels respin. Every new coin resets a counter, typically three respins. The round ends when the counter runs out, or when every position is filled.

Each coin carries a cash value, and filling the grid usually pays a large fixed multiple on top. The format works because the outcome develops in front of you rather than resolving in one spin, and because a near-miss is visible.

Practically it is high volatility. Base play is quiet and the feature carries the game, so stake sizing matters — a balance that only covers a few dozen spins may never see the round at all.

The naming makes the mechanic obvious. Mr Oinkster's Hold and Win, Buffalo Hold and Win and its Extreme and Extreme 10000 variants all run the format at escalating volatility. The Extreme versions raise the ceiling and the variance together rather than changing how the round works.

Outside that family, Burning Classics 5000, Wild Wild Vegas, Flaming Chillies, TNT Bonanza and Gold Gold Gold cover more conventional ground with classic themes and simpler features.

Players who want the feature to be an event. Hold and win rounds take time to resolve and the result is visible as it builds, which is a very different experience from a tumbling-reel game that settles in three seconds.

They suit a bankroll that can absorb quiet stretches. If yours cannot, the classic-format studios are a better fit — EGT Digital and Amusnet both pay more often and smaller.

For high volatility with a different feature structure, Pragmatic Play builds around multiplier scatters instead of respins. Yggdrasil sits between the two.

For prize pools that build across every player until they drop, see jackpot slots. Full studio list on slots by provider.

All 122 Booming Games titles Goldrush carries, taken from the operator's own game catalogue.

Published specifications where the studio or an independent database states them: rtp for 97 of 122, volatility for 95 of 122, reels for 117 of 122, lines or ways for 85 of 122, theme for 71 of 122. Blank cells are values that are not published, not values we have estimated.