Bison Fire Charge Slot Review

Most collect slots treat a board with nothing to collect as a dead spin. Bison Fire Charge, a June 2026 release from Microgaming, is built on the refusal. A cash plaque with no magnet banks a token toward four jackpots. Two scatters that trigger nothing raise a multiplier for a bonus you have not reached yet. Twin magnets over an empty board force a respin that has to pay. Six reels, four rows, 4,096 ways; the RTP is 96.00%, volatility is very high, the ceiling is 5,500x.

We gave it about eighty minutes: five spins at a 2.00 bet, then both bonuses bought at 0.20 - one of each kind, because this game sells a choice of two rounds rather than a round. The whole session cost 2.80 of a 197.89 starting balance, which for a very-high-volatility game that ate two 24.00 purchases is close to a refund.

The base game is a 4,096-ways board that pays small and knows it. Matching symbols on adjacent reels from the left form wins - two reels are enough for the animals, three for the card ranks - and the best of them, the flaming bison across all six reels, is worth 5x the bet. Read that again. The top line in the game pays five times your stake, on a slot advertising 5,500x, which tells you exactly where the money is not.

But a spin that pays nothing here is rarely doing nothing. Blue cash plaques land printing amounts from 0.8x up to 20x the bet; a giant gold horseshoe magnet - the Collect symbol, restricted to the two outer reels - sweeps every plaque on screen into your balance the moment it lands. Two magnets on one spin sweep the board twice over. A plaque that lands with no magnet is banked as a token instead, feeding four jackpot pots - Mini, Minor, Major, Mega - that grow as you play and reset when won. And magnets on both ends of a board with nothing to collect lock the outer reels while the middle four respin carrying only cash and blanks, at least one plaque guaranteed.

Even the near miss is on the payroll. Exactly two scatters landing on the first five reels - one short of a trigger - add 0.5x to a padlocked Bonus Multiplier meter that tops out at 5x. The meter does nothing in the base game itself; it multiplies every spin of your next bonus, then resets. So a run of failed triggers is quietly building the round you have not reached yet, half a multiplier at a time.

The ceiling is 5,500x; the road to it runs through the jackpots, not the reels. Each of the four pots is a multiple of your own stake: the Mega starts at 1,000x and caps at 2,500x, the Major runs 100x to 250x, the Minor 10x to 50x, the Mini 5x to 25x. Change your bet and the pots change with you - at 2.00 the Mega read 2,000.00, at 0.20 it read 200.04 - so this is private money scaled to your stake, not a pooled prize somebody else can take. Banked tokens do two jobs: they grow the pots a little on almost every plaque; they earn chances at the Jackpot Feature, a base-game event that reveals prizes and guarantees at least one jackpot once it fires.

Here is the part the buy menu will not tell you. The Jackpot Feature cannot trigger on a spin that triggers the bonus; the game says so twice. Buy your way in and you have skipped the jackpot path entirely - the Mega, the single biggest prize in the game, exists only for players grinding the base game. In a typical hold-and-win the buy button is a shortcut to the top prize. Here it is a detour around it.

The number itself is modest for this studio. Phoenix Blaze, Microgaming's other fire-branded collect game, carries a 10,000x ceiling at 96.05% RTP; Bolts of Zeus Coin Grid goes to 13,282x. What Bison Fire Charge offers instead is a ladder you can watch move - the Mega crept from 2,000.00 to 2,000.40 inside our first five spins.

Three to six scatters open a choice screen rather than a bonus. Fire Charge on one card, Free Spins on the other, both sized by the scatter count: three scatters offer 8 free spins or 2 Fire Charge spins, six offer 30 or 7. You pick one - the choice cannot be revisited - and the two rounds share almost nothing beyond the reels they are drawn on.

Free Spins is the ways game turned all the way up. Wilds appear only on the middle three reels; every wild taking part in a win carries a random 2x, 3x or 5x, several in one way multiplying together, the accrued Bonus Multiplier applied over the whole spin on top. The plaques and magnets vanish for the duration - this is purely a line-hitting round. Its retrigger is generous by design: the same two-scatter near miss that fills the meter in the base game here adds five spins, so extensions arrive far more often than the usual three-scatter kind. Ours arrived three times. A round bought as 30 spins ran to 75 and closed at 29.40 on a 0.20 bet - 147x, off a 120x purchase; it felt thinner than that number sounds.

Fire Charge is the collect half with everything else stripped out. The screen repaints itself flat gold; the reels empty to blanks; the only symbols left are cash plaques, magnets, and two retrigger symbols on reel six that each add a spin. A magnet is guaranteed on reel 1 on every spin - which means every spin pays something - and this round is the only home of the 100x plaque, the biggest single symbol in the game. One landed on our very first spin. The round retriggered once, ran 7 spins into 8, and closed at 25.36 on the same 0.20 bet: 126.8x, most of it that one pink plaque.

The buy menu sells the choice, not a round: 30x the bet for a three-scatter entry, 50x for four, 80x for five, 120x for six. At our 0.20 bet the cards read 6.00, 10.00, 16.00 and 24.00; bets run 0.20 to 50.00, though where we played the ladder stopped at 25.00. Every card also prints the current Bonus Multiplier level; that is not decoration - a purchase plays at whatever level the meter has reached. Grind the base game until near misses have pushed the meter toward its 5x cap, then buy: the same 24.00 now opens a round paying up to five times as much. Few buy menus reward patience; this one prices it in. Both of our purchases ran at a bare 1x, because five base spins produced no two-scatter miss.

One caveat travels with the menu: the game warns the buy may not be offered at every bet level or in every market; UK players generally will not see it at all.

The setting is a red-rock canyon at sunset done as a poster: mesas, scrub, a permanent haze of fire around a heavy gold frame. High symbols are painted animal portraits - bison, bear, wolf, cougar, eagle - over thick metallic card ranks. Only the bison burns, which is the right call: he is the top symbol and the mascot; he approves of wins personally. EXCEPTIONAL! arrived for a 25.36 total, so his bar is not high. The cash plaques are flat blue rectangles that look deliberately cheaper than everything around them, which works - they read as money rather than as symbols. Each bonus gets a full repaint, blood red for Free Spins and flat mustard gold for Fire Charge; the gold version looks like nothing else in the canyon, a bare void with horseshoe magnets pulling at it - oddly the best screen in the game.

• Almost no worthless board states: lone plaques bank jackpot tokens, twin magnets force a paying respin, two-scatter misses fill a 5x multiplier.
• Two structurally opposite bonuses at the same price - a multiplying ways round or a guaranteed-win collect round - and the buy sells you the choice itself.
• The purchase plays at your accrued multiplier, so patient players genuinely buy better rounds for the same money.

• The base paytable is a rounding error - 5x the bet for the best possible six-of-a-kind line.
• The biggest prizes cannot be bought: the Jackpot Feature is barred from bonus-triggering spins, so the Mega belongs to the base-game grind alone.
• A 5,500x ceiling sits well below studio stablemates such as Phoenix Blaze at 10,000x.
• Very high volatility with long flat stretches - four of our five base spins paid nothing; 75 free spins produced 147x with most individual spins blank.

A 24.00 purchase of the six-scatter bonus came back 25.36 through Fire Charge; the identical purchase on the Free Spins side came back 29.40 after three retriggers stretched 30 spins into 75. Both cleared their price by a whisker; both ran at a bare 1x meter; at 5x either would have been a different story - that gap is this game's whole argument. It does not want you buying blind - it wants you grinding, banking tokens, watching pots and half-multipliers accumulate, and cashing the patience in later.

On the shelf it will get confused with Buffalo Blitz 3, Playtech's 6x4 buffalo ways game; that one runs at 95.55% against the 96.00% here and tops out at 4,683x. This is the sharper version of the idea. It suits the player who will sit at 0.20 through empty spins, watch the padlocked meter climb, and spend the 24.00 only once the near misses have made it worth more than it costs.