Monster Blox GigaBlox Slot Review
A bug-eyed wizard in a star-patterned robe leans in from the edge of a mossy timber barn, staff glowing, while a cast-iron cauldron stamped “FS” bubbles away to the left. Monster Blox GigaBlox dresses like a children’s storybook, but the real prize isn’t on the paytable: it’s the board itself, because every win here matters less for what it pays than for the bigger panel it buys you.
Each win grows the grid by one row and 15 paylines, until a 6×4 board with 40 lines becomes 6×8 with 100. Peter & Sons built this one on the Gigablox format, and it runs at 96.1% RTP with high volatility and a 7,900x ceiling on that expanding grid.
The studio’s catalogue runs from Bear Patrol to Animafia and Abrakadabra, and this sits among the more mechanically ambitious of them. Monsters are stampeding across the countryside, and the bounty board says the biggest ones pay best.
Base Game & Features
The main game is a 6×4 panel with 40 paylines, evaluated from left to right. Stakes run from 0.20 to 100 per spin. One to three wilds can appear at random on any reel, and the wild substitutes for every symbol except the scatter.
The scatter is the Free Spins icon on the cauldron, it pays in any position, and five or more of them open the bonus game. The paytable is a short ladder, with all values shown as multiples of the total bet:
- Red Monster Mask: 1x for three, 2x for four, 2.5x for five, 10x for six
- Purple Creature Mask: 0.5x, 1x, 2x, 5x
- Green Tree Mask: 0.3x, 0.6x, 1.2x, 2.5x
- Teal Monster Mask: 0.25x, 0.5x, 1x, 2x
- Clubs, Hearts, Spades and Diamonds: 0.1x, 0.2x, 0.4x, 0.8x each
Only the highest win on each payline counts, and wins on separate lines add together. The four card suits all pay identically, so the masks carry the whole top half of the ladder on their own. Six-of-a-kind pays matter more here than in most games, because a big Gigablox block can cover an entire reel in one symbol.
Gigablox
Gigablox are oversized symbols that land in formations from 2×2 up to 6×6, and they behave like the individual symbols they cover. A 4×4 block of the Red Monster Mask is sixteen masks for payline purposes, and a 6×6 block on a fully grown panel could be thirty-six.
A block counts as a single enormous symbol visually, but payline evaluation breaks it back into its individual cells. That’s what makes a 6×6 formation on the top-paying mask so valuable: every covered cell contributes to a line win, and lines pay from the left.
They show up on every spin, and scatters can arrive as Gigablox too, which is how five or more can appear at once. There’s no waiting for a trigger; the question each spin is only how big the blocks will be and where they’ll sit.
Monster Re-spins
Each win in the main game awards a re-spin on a bigger board. The growth runs in fixed steps, one row and 15 paylines at a time:
- Starting panel: 6×4 with 40 paylines
- First re-spin: 6×5 with 55 paylines
- Second re-spin: 6×6 with 70 paylines
- Third re-spin: 6×7 with 85 paylines
- Maximum panel: 6×8 with 100 paylines
Every further win awards another re-spin and another step up the ladder. The chain stops the moment a re-spin produces no win, and the panel resets to 6×4 for the next paid spin.
Random wild placements are handed out during re-spins as part of the Wild Bounty feature, and they can land on any symbol size, including a full Gigablox block. A small win can snowball into a much bigger board, and the wilds arrive when the panel has the most lines to work with.
Wild Bounty
On any base game spin, the hunter can transform symbols into wilds. Gigablox blocks have a chance of being transformed along with the regular symbols, so a single transformation can seed several wild positions at once.
It’s a random injection rather than a triggered feature, and it can turn a dead spin into a paid one without warning. During re-spins it’s the source of the wild placements that keep chains alive.
Monster Blox GigaBlox Free Spins & Bonus Features
Five or more scatters trigger the Monster Free Spins bonus game, and the number of free spins awarded equals the number of scatters in view when it triggers. If scatters and a re-spin land together, the re-spin plays out first and the free spins follow. Extra scatters beyond five during a Monster Re-spin are added to the free spin count.
The bonus plays on the full 6×8 panel with 100 paylines, at the same bet as the triggering spin. Every scatter that lands during the round adds one more free spin, and every scatter is also collected into a meter that raises the Monster Multiplier in steps:
- 0-1 scatters collected: 2x multiplier
- 2-5 scatters collected: 3x multiplier
- 6-14 scatters collected: 5x multiplier
- 15+ scatters collected: 10x multiplier
The round builds on two tracks at once. Scatters extend the spins and climb the multiplier ladder, so a round that starts lean can finish on the full 10x with dozens of spins banked. The multiplier applies to the whole panel, not to individual wins, which makes the late stages of a long round worth far more than the early ones.
The Wild Bounty feature appears more often in free spins, and on no-win spins it’s guaranteed. That guarantee keeps a floor under the round: a spin either pays or produces wilds, and the wilds themselves usually turn it into a win.
Between the extending spins, the climbing multiplier and the guaranteed wilds, the round leans on accumulation rather than a single dramatic hit. Free spins can also be retriggered, because every scatter that lands both adds a spin and feeds the meter.
Our Honest Verdict
Overall Rating: 7.7/10
Most of the time this is a quiet game. Then one win lands, the barn door widens, and the session becomes about keeping the board alive rather than chasing a payout. That growing panel is the whole reason to pick it: no other idea here does as much work.
The re-spin chain is the strength, because it gives small wins a job. A 1x three-of-a-kind from the Red Monster Mask is forgettable on its own, but it buys a bigger board with more lines and wilds on the way, and that follow-up is worth more than the win itself.
The weakness is that the chains usually die young, and the 7,900x ceiling sits far above anything the game has actually produced. This one is for players who enjoy a slow build and a long bonus round, not for anyone after a quick jackpot swing. The biggest monsters pay best here, and the tavern rewards the hunters who wait for them.
Monster Blox GigaBlox FAQs
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What is the RTP of Monster Blox GigaBlox?
The RTP is 96.1%, and that’s the total expected return including every feature. -
Is Monster Blox GigaBlox high volatility?
Yes, it’s a high volatility slot, with a hit frequency of 18.4%, so most spins won’t pay. -
How do you trigger free spins in Monster Blox GigaBlox?
Five or more scatter symbols trigger the Monster Free Spins bonus, and the number of scatters that landed equals the number of free spins awarded. -
How does the Monster Multiplier work?
Every scatter collected during free spins feeds a meter that raises a panel multiplier. It climbs from 2x to 3x at two scatters, 5x at six, and 10x at fifteen or more. -
What do Monster Re-spins do?
A win in the main game starts the re-spin chain, and each re-spin plays on a panel one row and 15 paylines bigger. Wins keep it going to a maximum of 6×8 with 100 paylines; a losing re-spin ends it and the panel resets. -
Can scatters land as Gigablox in Monster Blox GigaBlox?
Yes. Scatter symbols can arrive as Gigablox blocks, which is how five or more can hit the reels at the same time. -
How many paylines does Monster Blox GigaBlox have?
The base game has 40 paylines, but the panel grows during Monster Re-spins and free spins, up to a maximum of 100 paylines on the full 6×8 board. -
What is the maximum win on Monster Blox GigaBlox?
The maximum win is 7,900x the bet.
