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Super Boost (Relax Gaming) – Review & Demo Play
Super Boost from Relax Gaming play free demo version ▶ Casino Slot Review Super Boost ✔ Return (RTP) of online slots on July 2026 and play for real money✔
Super Boost - Slot Overview
I've spun plenty of Electric Elephant titles, and Super Boost drops me into a neon space arcade with EDM pulsing away. It's a 5x5, 40-line setup with cascading wins and a multiplier reel that can climb to 100x. Stakes run from 10p to £50. RTP sits at 96.46% with high volatility rated 8/10 and a 14.47% hit rate. The headline max win is 200,000x, but you'll need long chains and the Mega Spin with stacked wilds to move the needle.
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Cascades and Multiplier in Super Boost
Each win in Super Boost triggers a cascade, but there's a twist. Instead of clearing only the winning symbols, the game wipes every symbol from any reel that held at least one winning symbol. Fresh icons then drop down on those reels, giving you a proper refresh and a real chance to extend the chain. The progressive multiplier on the side climbs with each consecutive win, stepping through 1x, 2x, 3x, 5x, 7x, 10x, 15x, 25x, 50x, up to 100x.
This ladder is the whole game. You rarely land anything of note without climbing it. Sessions can feel very hit or miss, as the base pays are modest and dry spells bite. When the reel clears fall kindly and the multiplier bites, though, even a small five-line cluster can pop off. I've had runs stall at 7x or 10x often, with the big leaps to 25x or 50x needing patience and a touch of luck.
Bonus Features in Super Boost
Three consecutive cascades trigger the Super Boost Mega Spin. It's a single free spin that adds stacked wilds to the middle reels, with stacks landing as 1x5, 2x5, or 3x5. Those stacks help keep the chain alive after the freebie, and the multiplier you reached before triggering carries over to wins made with that spin. On a good day, the Mega Spin links straight back into fresh cascades, and that's when the multiplier can rocket.
Symbols and Paytable for Super Boost
The paytable keeps things simple. Low symbols are royals that pay up to 1.5x for five of a kind. Premiums are colourful geometric shapes that pay between 2.5x and 7.5x for five. The game logo is wild and the top payer, substituting for all regulars and paying 30x for five on a line. There are 40 fixed paylines across the 5x5 grid, and wins pay left to right on adjacent reels.
To land a line you need three or more matching symbols on adjacent reels starting from the leftmost. In the Mega Spin, stacked wilds across reels 2, 3, and 4 can create tidy setups that turn middling symbols into proper payers. The paytable on its own is modest, which suits the design here, as the progressive multiplier is the real earner. Small lines at 25x or 50x soon add up during a good chain.
Super Boost Symbols and Paytable
| Symbol | Quantity | Payout |
|---|---|---|
 |
Wild | |
| 5 | x50 | |
| 4 | x10 | |
| 3 | x3 | |
 |
5 | x7.5 |
| 4 | x3.5 | |
| 3 | x1.5 | |
 |
5 | x5 |
| 4 | x2.5 | |
| 3 | x1 | |
 |
5 | x4 |
| 4 | x2 | |
| 3 | x0.8 | |
 |
5 | x3.5 |
| 4 | x1.5 | |
| 3 | x0.8 | |
 |
5 | x2.5 |
| 4 | x1.2 | |
| 3 | x0.5 | |
 |
5 | x1.5 |
| 4 | x1 | |
| 3 | x0.2 | |
 |
5 | x1.5 |
| 4 | x1 | |
| 3 | x0.2 | |
 |
5 | x1.5 |
| 4 | x1 | |
| 3 | x0.2 | |
 |
5 | x1 |
| 4 | x0.5 | |
| 3 | x0.1 | |
 |
5 | x1 |
| 4 | x0.5 | |
| 3 | x0.1 | |
How to Play Super Boost
Electric Elephant uses a clean interface, and Super Boost keeps it tidy. Controls sit on the right side. The sound button lets you toggle effects and music. Tap the cog to view the paytable and feature info. Set stakes via the chip from 10p to £50 per spin. Autoplay can run 10 to 100 spins with optional win and loss stops, or you can spin manually. The rules are straightforward: land 3+ matching symbols left to right across 40 fixed lines.
RTP, Volatility and Max Win in Super Boost
On the maths side, Super Boost runs at 96.46% RTP with high volatility rated 8 out of 10. The hit rate sits at 14.47%, so stretches of dead spins are normal between your better runs. Swings can be sharp, and staking needs restraint, as you may need time to build a chain, trigger the Mega Spin, and let the multiplier do the heavy lifting. With a 10p to £50 range, it caters for testing at low stakes before upping the pace.
The headline max win is 200,000x, which feels more like a theoretical ceiling than a regular target. Internal testing quoted by reviewers has seen 17,643x, a figure that makes sense given how the ladder pairs with stacked wilds. The game's engine can produce huge screens when it goes your way, but the window to line it all up is narrow. Most sessions stall around 7x to 15x unless the Mega Spin feeds straight into more cascades.
My sessions mirrored that story. Long lulls, then sudden bursts when the reels cleared on repeat. It's very much a hit or miss affair. When the multiplier hits 25x or 50x, even small lines feel chunky, and the pace of wins can surprise you. When it doesn't land, the game can feel quiet for long stretches. Across longer sets I often finished around 20x to 30x on better bursts, while several runs went nowhere despite stacked wilds teasing the feature.
Gallery of video and screenshots of the game
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All our content is written by our editorial team and checked before publication. We play the games ourselves, verify licences and withdrawal terms, and update every review as soon as something changes.
Under the supervision of Editor-in-Chief Mark Rylance