Blobsters Clusterbuster - Game Overview
Blobsters Clusterbuster is a cluster-paying grid slot developed by Red Tiger Gaming, marking the third entry in the studio's Clusterbuster series. Set against a swirling cosmic backdrop of planets, gas clouds and stars, the game follows Blobby, a crowned alien sitting inside a UFO at the centre of the grid. The slot uses a 9x9 layout with a 3x3 chunk in the middle known as the Clusterbuster, and players need to land at least five matching symbols adjacent to each other horizontally or vertically to form a winning cluster.
Stakes range from 10p to 10 pounds per spin, and the game runs smoothly across desktop and mobile devices thanks to HTML5 technology. Winning clusters disappear from the board through a cascade mechanic, allowing new symbols to drop in from above and potentially create further wins on the same spin. The visual design leans into a cartoonish, playful style, with Blobby himself animated to snore and slouch when no wins land - a small but entertaining touch that adds personality to the base game experience.
Symbols and Paytable in Blobsters Clusterbuster
The paytable in Blobsters Clusterbuster is split between low-paying card royals and higher-value alien characters. The low-pay set consists of 10, J, Q, K and A, returning between 0.1x and 20x the stake depending on cluster size. Premium symbols are represented by Blobby's colourful subjects - blue, green, red and yellow multi-eyed aliens - which pay from 0.3x for a cluster of five up to 250x for clusters of 35 or more symbols. A five-symbol cluster of any kind sits at the lower end, while genuinely large clusters are needed to generate meaningful returns.
Symbol Payouts
| Symbol | Payout |
|---|---|
 | 35+ → x250 |
| 30+ → x75 | |
| 25+ → x30 | |
| 20+ → x15 | |
| 15+ → x10 | |
| 13+ → x5 | |
| 11+ → x3 | |
| 9+ → x2.5 | |
| 7+ → x2 | |
| 5+ → x1.5 | |
 | 35+ → x150 |
| 30+ → x50 | |
| 25+ → x20 | |
| 20+ → x10 | |
| 15+ → x5 | |
| 13+ → x2.5 | |
| 11+ → x1.2 | |
| 9+ → x1 | |
| 7+ → x0.8 | |
| 5+ → x0.5 | |
 | 35+ → x100 |
| 30+ → x30 | |
| 25+ → x15 | |
| 20+ → x8 | |
| 15+ → x4 | |
| 13+ → x2 | |
| 11+ → x1 | |
| 9+ → x0.8 | |
| 7+ → x0.6 | |
| 5+ → x0.4 | |
 | 35+ → x50 |
| 30+ → x25 | |
| 25+ → x12 | |
| 20+ → x6 | |
| 15+ → x3 | |
| 13+ → x1.5 | |
| 11+ → x0.9 | |
| 9+ → x0.7 | |
| 7+ → x0.5 | |
| 5+ → x0.3 | |
 | 30+ → x20 |
| 25+ → x10 | |
| 20+ → x5 | |
| 15+ → x2.5 | |
| 13+ → x1.2 | |
| 11+ → x0.8 | |
| 9+ → x0.5 | |
| 7+ → x0.4 | |
| 5+ → x0.2 | |
 | 30+ → x16 |
| 25+ → x8 | |
| 20+ → x4 | |
| 15+ → x2 | |
| 13+ → x1 | |
| 11+ → x0.7 | |
| 9+ → x0.4 | |
| 7+ → x0.3 | |
| 5+ → x0.2 | |
 | 30+ → x14 |
| 25+ → x7 | |
| 20+ → x3.5 | |
| 15+ → x1.8 | |
| 13+ → x0.8 | |
| 11+ → x0.6 | |
| 9+ → x0.4 | |
| 7+ → x0.3 | |
| 5+ → x0.1 | |
 | 30+ → x12 |
| 25+ → x6 | |
| 20+ → x3 | |
| 15+ → x1.5 | |
| 13+ → x0.7 | |
| 11+ → x0.5 | |
| 9+ → x0.3 | |
| 7+ → x0.2 | |
| 5+ → x0.1 | |
 | 30+ → x10 |
| 25+ → x5 | |
| 20+ → x2.5 | |
| 15+ → x1.2 | |
| 13+ → x0.6 | |
| 11+ → x0.4 | |
| 9+ → x0.3 | |
| 7+ → x0.2 | |
| 5+ → x0.1 | |
 | Special |
 | Special |
 | Special |
 | Wild |
Bonus Features in Blobsters Clusterbuster
Blobsters Clusterbuster uses a progression system tied to Blobby's central UFO. When a winning cluster forms adjacent to the 3x3 ship, lights around it turn green. Once all eight lights are lit, a modifier is unlocked and activates on the following spin. Three modifiers exist - Upgrader, Frenzy and Supersize - and they must be unlocked in order before the free spins round becomes available. Crucially, all three can fire on the same spin once unlocked, and Blobby may occasionally rage out to switch on a final stubborn light at random.
The Upgrader sees Blobby shoot laser rays at low-pay symbols not involved in clusters, converting them into high-pay ones. Between 8 and 24 symbols can be upgraded in the base game, rising to 11 to 31 during free spins. Frenzy transforms 5 to 20 random symbols into wilds, which substitute for all paying symbols. Supersize targets 2 to 4 high-pay or wild symbols and inflates them into 3x3 Super Symbols, each counting as nine regular symbols.
After all three modifiers have been unlocked, filling every light on the UFO triggers 10 Invader Spins. During this free spins round, modifiers activate at an increased rate. The UFO can be reactivated up to three times, each granting an extra 3 spins and applying a global multiplier - x3 on the first activation, x7 on the second and x12 on the third. This pushes the theoretical maximum to 19 free spins with a x12 multiplier in play, which is where the slot's headline wins are most likely to emerge.
Blobsters Clusterbuster - RTP, Volatility and Max Win
The default non-jackpot RTP for Blobsters Clusterbuster sits at 95.70%, which is a touch below the broader industry average but consistent with many Red Tiger releases. Several reduced RTP configurations also exist for operators, so it is worth checking the info screen at your chosen venue. Volatility is rated as medium, suggesting a relatively balanced hit rate that does not lean too heavily towards long dry spells or constant small returns.
Maximum win potential is listed at 7,500x the stake, achievable through the combination of Invader Spins, stacked modifiers and the x12 global multiplier. That figure represents an improvement over the original Dragons Clusterbuster, though it falls short of some higher-ceiling cluster slots on the market. For a medium-volatility game, it is a respectable ceiling, but players chasing five-figure multipliers will need to look elsewhere.
Blobsters Clusterbuster - Final Verdict
Blobsters Clusterbuster does not reinvent the Clusterbuster formula so much as refine it. The progression mechanic, where modifiers must be earned before they can fire, gives sessions a sense of building momentum that purely random feature triggers do not always provide. Replacing the multiplier modifier from Dragons Clusterbuster with Super Symbols, and shifting multipliers into the free spins round via the global multiplier system, is a sensible structural tweak that concentrates the biggest win potential where it matters most.
It is not a game that will set pulses racing on paper - medium volatility, a 7,500x cap and a sub-96% RTP are all perfectly functional rather than headline-grabbing numbers. Yet the alien theme is handled with genuine charm, the layered unlock system adds engagement beyond simple spinning, and the Invader Spins round carries enough firepower to justify repeated sessions. A solid if unspectacular third outing for the Clusterbuster series from Red Tiger Gaming.
In-Game Screenshots
Blobsters Clusterbuster FAQ
Blobsters Clusterbuster — Comparison
| Game | RTP | Volatility | Max Win | Rating |
|---|---|---|---|---|
| 95.7% | High | x7500 | 8.5 | |
| 95.69% | 94.68% | 92.68% | 90.72% | High | x20000 | 8 | |
| 95.74% | 94.70% | 92.77% | 90.73% | High | x26670 | 7.5 | |
| 95.70% | High | x6186 | 8.5 | |
| 95.76% | High | x6000 | 7.5 | |
| 95.71% | High | x20000 | 7.7 | |
| 95.72% | High | x13409 | 7.5 | |
| 95.73% | High | x16060 | 8 | |
| 95.66% | High | x1110 | 8.5 | |
| 95.70% | High | x25000 | 8.5 | |
| 95.69% | High | x17725 | 8.5 | |
| 95.72% | Average | x784 | 7.5 | |
| 95.75% | High | x10400 | 7.5 | |
| 95.68% | High | x5173 | 7.5 | |
| 95.74% | High | x22500 | 8.5 | |
| 97.66% | 94.68% | 92.77% | 90.77% | High | x20500 | 8.7 | |
| 95.74% | High | x19946 | 8 | |
| 95.72% | High | x2172 | 6.5 | |
| 95.73% | High | x19995 | 7.3 | |
| 95.73% | Average | x995 | 7.5 | |
| 95.81% | Average | x2500 | 6.5 | |
| 95.76% | High | x4200 | 7.5 | |
| 95.68% | High | x20000 | 8.5 | |
| 93.75% | High | x1958 | 8 | |
| 95.72% | Average | x10400 | 6.5 | |
| 95.71% | Above average | x6656 | 7 | |
| 95.74% | High | x20482 | 8 | |
| 96% | High | x7931 |
