Stampeding bison are the basis for the reduplicated Rumble Rumble, a November 2014 video slot whose developer Ainsworth’s suchlike games include the multigame Mustang series. It is alternatively titled Rumble Rumble Bison to differentiate it from the 2017 games Rumble Rumble Bear and Rumble Rumble Eagle, which are collectively called the Curved Reel series.

Featuring wildlife and fire themes, Rumble Rumble has: 41 coins, expandable reels, reel-long repopulating wilds, ordinaries-turned-wilds, dynamic grid, three substituting wilds, 100 rightward and adjustable win lines (44 options), 1804 total bets, fifteen symbols, and (more) free games.

Thirteen symbols (“wild” fire, coin, butte, wolf, eagle, mustang, reindeer, A, K, J, Q, 9, 10) pay from X2 to X100 for three to five combinations.

Rumble Rumble Game Characteristics

A herd of four bison, stomping through an inferno, backgrounds the Rumble Rumble’s frameless and basic 5X3 grid that consists of conjoined parchment yellow reels. Its middle and corner reels are red-lined; the second and fourth reels have double-lined blue top and bottom cells, and double-lined crimson middle cells.

The Rumble Rumble’s coins: $0.01, $0.02, $0.03, $0.04, $0.05, $0.06, $0.07, $0.08, $0.09, $0.10, $0.25, $0.50, $0.75, $1.00, $2.00, $3.00, $4.00, $5.00, $6.00, $7.00, $8.00, $9.00, $10.00, $15.00, $20.00, $25.00, $30.00, $35.00, $40.00, $45.00, $50.00, $55.00, $60.00, $65.00, $70.00, $75.00, $80.00, $85.00, $90.00, $95.00, and $100.00.

The Rumble Rumble’s optional pay lines: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, or 100. Total bet: $0.01 (minimum); and $10000.00 (maximum).

Rumble Rumble’s four special symbols: the first substitute is a burning orange-and-red “Wild”; the second substitute is a “wild” lettering; the third substitute-and-scatter is a free games-activating burning bison-embossed golden [“wild”] coin; and a symbol-transforming fiery bison.

Eleven ordinary symbols: sunlit golden butte; moon-lit gray wolf; sunlit soaring eagle; gray mustang; turquoise reindeer; purple A; orange K; blue J; golden Q; green 9; and red 10.

Here are the Rumble Rumble’s payouts for three, four or five-of-a-kind. K/Q/A/10/9/J pay X2, X3, and X5. Deer pay X2, X4, and X8. Mustangs/eagles/wolves pay X2, X4, and X10. Buttes pay X3, X8, and X25. “Wild” fires pay X3, X10, and X50. Wild coins/plain coins pay X1, X10, and X100.

The aforementioned odds apply to the regular and free spins games; the only exception is the buttes whose free spins-related payouts are X3, X8, and X50. 3+ coins offer eight free spins whose 2+ re-landing coins then offer +5 free spins. Free spins elongate the reels, forming a 5X9 grid.

A fire bison in the: second reel’s crimson cell transforms the ordinaries into fiery “wilds”, repopulating the first three reels; and fourth reel’s crimson cell transforms all ordinaries into fiery “wilds”, also repopulating the last three reels—any coin among them also becomes a “wild” coin.

Three-of-a-kind of coins pay at least $0.01 (minimum win). Five-of-a-kind of coins pay a maximum of $1000000.00 (non-progressive jackpot).

The Rumble Rumble software: HTML5 technology; mobile/desktop versions; and 10/25/50/75/100 auto spins. Sounds effects: ringing, swishing, retro, and “super sweet” exclamation.

The animated 3D graphics: burning grid, dolly zooming, flipping coins, flashing combinations, glitter effect, intermittent cyan and golden glow, and goring and fuming bison.

Luck in Rumble Rumble

Rumble Rumble, a game of chance, has a 94.08% RTP rate and a 5.92% house edge.