Fat Cats DoubleMax™

Fat Cats DoubleMax™ is a cascading Gigablox™ slot from Yggdrasil, developed by the partner studio Reflex Gaming on the GATI platform and released on 13 October 2026. Five spoiled felines – a crowned white kitten, a grey cat in a fedora, a ginger tom in a red top hat, a sunglasses-wearing cowboy cat and a green-haired punk – have made a fortune and now guard a vault packed with gold bars. The game runs on 5 reels and 5 rows with 50 paylines, and its whole design is built around one idea: every win doubles the multiplier for the next one.

Gold Bars, Fat Cats And Giant Symbols

The reels sit in an ornate golden frame in front of a bank vault, with stacks of cake-like money towers on the left showing the next three multiplier steps. The five cats are the premium symbols, and the card royals 10, J, Q, K and A, drawn in shiny purple, gold and green, fill the lower part of the paytable. A ball of golden yarn marked “WILD” substitutes for every symbol except the Bonus, and the Bonus itself is a sparkling blue diamond. Thanks to the Gigablox™ engine, symbols often land in 2x2 or 3x3 blocks, so one giant cat portrait can cover nine positions and count as nine matching symbols on the lines.

Cascades And The DoubleMax™ Trail

Winning symbols disappear and new ones drop into the gaps. After each cascade a Wild is added to a random position before the empty spaces are filled, so a chain of wins tends to feed itself. Every win is multiplied by the current value on the trail, and after each win the multiplier doubles: x1, x2, x4, x8, x16 and so on, all the way up to an enormous x16,384. In the base game the trail goes back to x1 when the cascade sequence ends, which keeps the ordinary spins modest, but a long tumble can still turn a few small line hits into a respectable payout.

Three Reel Bonuses

Three random modifiers can rescue a dead spin:

• Golden Claw – after a losing spin, a claw can merge 2 or 3 neighbouring reels into one giga reel. The giga reel shifts to the far left to form a win, then moves one step back to the right with every new drop for as long as it keeps creating wins. Base game only.
• Paw Slap – a mouse runs across the screen and a cat’s paw swipes at it. Each swipe pushes the starting multiplier up by one step, for 1 to 5 steps, so a spin can begin at up to x32. Base game only.
• Champagne Bonus – after a losing spin, champagne pours over reel 1, 2 or 3 and turns the whole reel into one symbol, creating a win. This one also works in the Free Spins.

Free Spins Where The Multiplier Never Resets

The feature is triggered by Bonus diamonds counted at the end of the cascade sequence: 3 Bonus symbols award 7 Free Spins, 4 award 10 and 5 award 12. Bonus symbols can also land as wide pieces on a giga reel. The big difference compared with the base game is that the DoubleMax™ multiplier starts at x1 and then never resets between spins. Every win of the round keeps pushing the same trail upward, so the last spins are played with the highest multipliers. The Free Spins cannot be retriggered, and the Wild added after each cascade keeps the chains going.

Golden Bet And Bonus Buy

Next to the spin button there is a Golden Bet switch. It costs 30% extra per spin and doubles the chance of triggering the Free Spins; it can only be used in the base game. The Buy a Bonus button sells the Free Spins for 100x the base bet, and the bought round starts with 3, 4 or 5 Bonus symbols, so the number of spins is not fixed. The maximum stake for the buy can be lower in some markets.

A Bought Round At €1

We paid €100 for the feature at a €1 stake. The trigger spin showed three blue diamonds, and the game awarded 7 Free Spins. The first few spins were quiet: a giant ginger cat block, a tumble of 10s and Qs for €3.10 at x1, and a short line of hat-wearing cats with a Wild at x4. The trail moved slowly, but it never went back.

From the third spin onward things picked up. Several “5 of a Kind” flashes appeared as giant cat blocks covered the middle reels, and the multiplier passed x8, x16 and then x32, where a modest line of Js and Ks paid €1.30 x32. On the final spins a single row of 10s next to a Wild ran at x64, and the trail ended at x128. The round closed with a “You’ve won” screen showing €102.90, almost exactly the price of the feature. It shows the character of the game well: the early spins rarely matter, and everything depends on how high the trail climbs before the last spin.

RTP, Volatility And Max Win

The headline RTP is 96%, and the game is also available with 94%, 92% and 90.5% settings; the demo version we played reports 94.0%, so check the rules in your casino. The volatility is medium-high, the hit frequency is about 24%, and the maximum win is 10,000x the base bet. If a Free Spins round goes past this cap, the round ends and 10,000x is paid. Bets range from €0.10 to €100 per spin.

Is It Worth The Purr?

Fat Cats DoubleMax™ mixes three familiar ideas – cascades, Gigablox and a doubling multiplier – and the persistent trail in the Free Spins makes the combination work. It is a game for players who enjoy watching a bonus build slowly towards a big finish, and who can accept that many rounds end close to the cost of the buy. The cheeky cat theme and the three reel bonuses keep the base game lively enough between features.

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