Gemblast Slot Review
Purple nebula clouds drift past a scatter of pinpoint stars, and magenta light columns run down either side of the reels, glowing pillars framing the grid. Gemblast is a fruit machine wearing a spacesuit, and that’s not a complaint: the 7, the BAR and a handful of cut gems glow neon against the dark, and the familiar old ladder is easier to like when it’s dressed this well.
Endorphina have built it as a straight classic with a cosmic paint job: a 5×3 grid, 10 paylines and a 98.06% RTP, among the more generous returns you’ll find anywhere. It follows the classic-leaning streak of Multistar Fruits and Fruletta rather than the heavier feature pieces in the catalogue.
No free spins round, no scatter, no jackpot ladder. Just gems, a star that expands, and a deck of cards for anyone feeling brave.
Classic Symbols on Ten Lines
Matching symbols need to land on enabled paylines and adjacent reels, and Gemblast pays from either end: combinations count starting from the leftmost reel or the rightmost. On each line only the highest combination pays. Wins across different lines combine into the total.
A gem run that starts on reel five counts just as much as its mirror image on reel one. It’s a simple structure, and the game doesn’t dress it up.
All prizes below are multiples of the total bet:
- 7 – 10x for three, 50x for four, 100x for five
- BAR – 5x for three, 20x for four, 50x for five
- Orange square gem – 2x for three, 5x for four, 20x for five
- Gold gem – 2x for three, 5x for four, 20x for five
- Green hexagon gem – 1x for three, 3x for four, 15x for five
- Cyan diamond gem – 1x for three, 3x for four, 15x for five
- Blue diamond gem – 1x for three, 2x for four, 10x for five
- Purple triangle gem – 1x for three, 2x for four, 10x for five
The ladder is steep at the top and flat at the bottom, which is classic fruit-machine arithmetic. The 7 is the only symbol that pays anything meaningful for a five-of-a-kind. Below it, the gems sit in four pairs, and each pair pays identically at every length.
The four lowest gems all pay the same for three, so the bottom half of the paytable is one long flat step. That shape matters for how the base game feels: most line wins are small, and the rare 7 or BAR combination does the real lifting.
The Wild Star and Its Re-Spins
The star is the game’s one true feature. It’s a wild that substitutes for every symbol, and it only appears on reels two, three and four. When it lands, it expands to cover the entire reel it sits on, then triggers a re-spin with that reel held fully wild.
The maximum number of re-spins is three, so a lucky sequence can stack expanded wilds across the middle reels and re-run them twice more. Reels one and five never carry the star, which means the outer reels always have to supply the paying symbols themselves.
With paylines counting from both directions, a fully wild middle reel is doing a lot of work. It completes combinations to the left and the right at once, so two expanded wilds can pay several lines in a single re-spin. That’s the entire feature. There’s nothing behind it, no second stage and no multiplier on top.
The Risk Game
After any win, the Risk Game offers a card duel on the winnings. Four cards are dealt face down on the table and the Dealer has one of their own. Pick a card that beats the Dealer’s and the win doubles, and you can go again, up to 10 attempts in total. Lose any round and the winnings are gone and the game ends.
Press TAKE WIN at any point to quit and collect what’s on the table. The fine print of the duel works like this:
- The Joker beats all other cards, and the Dealer can never be dealt one, so the strongest card on the table is always yours to find
- A card matching the Dealer’s value is a draw: your winnings don’t change, and you take another attempt
- All four face-down cards can be higher than the Dealer’s, and all four can be lower
- Cards may reappear from round to round, so a card you’ve seen isn’t gone
- The probability of cards being dealt is not equally distributed across the choices
One number matters more than the rest. If you take the risk regardless of the Dealer’s card, the average return for the Risk Game round is 84%, so a blind gamble loses money over time. The feature rewards players who actually look at what they’re up against, and punishes everyone else.
Our Honest Verdict
Overall Rating: 7.7/10
Gemblast spins fast and asks little of you. Ten lines, gems, and long quiet stretches where the low pairs trickle in small wins, brightened by a neon sky that makes the simplicity feel deliberate rather than cheap. The one reason to pick it out of a lobby full of classics is the duel after every win.
Its strength is that Risk Game. A ten-attempt doubling ladder where the Joker is always on your side of the table gives the game its only real decisions, and the 84% return on blind gambling means those decisions genuinely matter. Its weakness is everything around it: one expanding wild and a card duel is the entire feature list, and there’s no free spins round or scatter to break up the rhythm.
For players who like a quick, both-ways classic with a proper gamble attached, it’s easy to recommend. If it’s bonus rounds and long feature builds you’re after, the rest of the Endorphina catalogue will serve you better. Gemblast keeps things lean, and the stars keep things pretty.
Gemblast FAQs
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What is the RTP of Gemblast?
Gemblast runs at a total RTP of 98.06%. That figure covers the whole game, while the optional Risk Game round has its own average return of 84% if you take the risk regardless of the Dealer’s card. -
Who makes Gemblast?
Gemblast is made by Endorphina, the Malta-based studio behind a large catalogue of classic-leaning slots. -
How many paylines does Gemblast have?
Gemblast is a 5-reel, 3-row slot with 10 paylines. Winning combinations count from either the leftmost or the rightmost reel, and only the highest win on each line pays. -
What is the grid size of Gemblast?
Gemblast uses a 5×3 grid: five reels and three rows, with ten fixed paylines running across them in both directions. -
How does the Wild Star work in Gemblast?
The Wild Star appears only on reels two, three and four. It substitutes for all symbols, expands to cover its entire reel, and triggers a re-spin. The maximum number of re-spins is three, so up to three extra spins can run with expanded wilds in play. -
How does the Risk Game work in Gemblast?
After a win you can risk it in a card duel. Pick one of four face-down cards, and if it beats the Dealer’s card your win doubles. You can try again up to 10 times in total, but if the Dealer wins any round you lose the winnings. A matching value is a draw and lets you try again, and TAKE WIN collects your current winnings at any point. -
Can the Dealer get a Joker in the Risk Game?
No. The Joker is the strongest card in the duel and it only ever appears among the four face-down choices, never in the Dealer’s hand. Card probabilities aren’t equally distributed either, so not every pick carries the same chance. -
How many times can you risk your winnings in Gemblast’s Risk Game?
Up to 10 attempts in total. Each successful pick doubles the win and lets you carry on, a draw leaves the winnings unchanged and also counts as another attempt, and any losing pick ends the round with nothing. TAKE WIN quits the duel and collects whatever is on the table at that moment.
