Return to player
96.45%
Min bet size
0.2
Game type
Video Slots
Variance
Medium
Reels
6
Progressive Jackpot
No
Popularity
Max bet size
240
Game provider
Pragmatic Play
Bonus Features
Yes
Paylines
Cluster pays
Theme
Space
Cosmic Clusters! online slot game
Space slots tend to promise infinite possibilities, only to have them become just another regular grid system. The Cosmic Clusters! slot, which will be released by Pragmatic Play in July 2026, manages to break free from this limitation. It is a slot machine that comes with both an astronaut and a happy alien; but, its main feature is coin clustering which keeps adding momentum to every tumble that other medium volatility slots lack.
Cosmic Clusters! Slot Review: Our Hands-On Experience
We played Cosmic Clusters! for 200 spins at €1 stake on desktop in the demo mode. The bonus did not trigger organically. We purchased Epic Free Spins at 1,000x the stake, which awarded 12 free spins and returned 1,304.55x. The base game felt fast, with the first win on spin 2 and hits continuing every 3-8 spins throughout. The biggest base game win was 57.25x around spin 150. Cosmic Clusters! suits players comfortable with a medium-volatility slot where the base game is genuinely active but the ceiling lives in the feature.
Testing Conditions
| Device | MacBook (Desktop) |
|---|---|
| Browser | Google Chrome |
| Date tested | 21/06/2026 |
| Stake per spin | €1.00 (Fun mode) |
| Spins tested | 200 (manual) |
| Bonus buy | Yes, Epic Free Spins at 1,000x the stake |
Cosmic Clusters! Slot Overview
| Detail | Info |
|---|---|
| Provider | Pragmatic Play |
| Release Date | July 16, 2026 |
| RTP | 96.45% in the base game |
| Volatility | Medium |
| Max Win | 5,000x |
| Max Win Probability | 1 in 3,162,555 |
| Grid | 6x6 |
| Win Mechanic | Cluster pays (min. 5 connected) |
| Min Bet | €0.20 |
| Max Bet | €240 |
- Online casinos can change the RTP percentage, so it’s worth checking before playing.
Cosmic Clusters! Theme and First Impressions
The appearance of Cosmic Clusters is joyful rather than intense. The background features planetoids and alien characters with green faces and UFOs flying across the reels. The game seems to be created for players who do not require any narrative from the game. The strong point of the game lies in the integration of money symbols that include bronze, silver, and gold coins.
Compared to the Pirots slot series from Elk Studios, which has a space station story as the basis of their bird-collecting system, Cosmic Clusters! is lighter on purpose.
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How Cosmic Clusters! Plays – Base Game
Cosmic Clusters! uses a 6x6 grid, where 5+ matching symbols connected horizontally or vertically pay out, then disappear. The symbols fall from the top to replace those vanished – tumble mechanic. Every time there is a tumble, a wild land randomly appears at an open position. The Random Wild is the primary quiet mechanism for the base game. It does not guarantee a chain but regularly prolongs one when the grid is already in motion.
With a hit frequency of 1 in 4.08, cold stretches rarely drag, and the medium volatility keeps things from swinging too hard. The Money Symbol System adds depth: Bronze coins are valued at 0.5x to 2x, silver at 3x to 8x, and gold at 10x to 1,000x. If there is a cluster of at least five coins, it pays out, explodes, and leaves behind a single coin whose value equals what the previous coins paid out.
Cosmic Clusters! Symbol Paytable Based on 1$ Bet:
Cosmic Clusters! Bonus Features
Free Spins
When 3, 4, 5, or 6 Scatters land on the grid, they award 12, 15, 18, or 21 FS, respectively. If 2+ Scatters land during the round, you receive two more spins. The main difference from the base game is that Money symbols that land but do not form clusters fall to the grid’s bottom and stay there, accumulating across spins. Symbols that disappear during tumble and are not in the winning combination become Money Symbols. The grid loads gradually; symbols created from the previous spins become coins to be collected in further spins.
Buy Feature
- Free Spins (100x) – all Money symbol tiers
- Super Free Spins (300x) – Silver and Gold coins only
- Epic Free Spins (1,000x) – Gold coins only
Ante Bet
- Ante Bet 1 (1.5x) – 2.5x higher free spins trigger chance
- Ante Bet 2 (2.5x) – 5x higher free spins trigger chance
What to Expect When Playing Cosmic Clusters!
Cosmic Clusters! does exactly what a cluster pays slot with a medium variance should do. The base game contributes, the coin system provides a secondary win condition, and sessions don’t regularly punish you with extended dead stretches.
Win Potential and Volatility
The max win is 5,000x the bet. The probability of hitting it is 1 in 3,162,555. In practice, base game wins mostly sit below 20x with occasional spikes.
Bet Range and Who It Suits
The bet range is €0.20-€240. This suits medium-variance players looking for active sessions without overspending. Bonus hunters get a clean feature ladder here.
Mobile Performance
During our testing, Cosmic Clusters! performed smoothly on mobile. We tested it on an iPhone and an Android smartphone, and did not notice any lag. The game performs well in both orientations. No dedicated apps are needed.
How Cosmic Clusters! Compares
| Slot | Cosmic Clusters! | Sugar Rush 1000 | Pirots 4 |
|---|---|---|---|
| Provider | Pragmatic Play | Pragmatic Play | ELK Studios |
| RTP | 96.45% | 96.53% | 94% |
| Volatility | Medium | High | High (7/10) |
| Max Win | 5,000x | 25,000x | 10,000x |
| Buy Feature | Yes (100x-1,000x) | Yes (100x-500x) | Yes (3x-500x) |
| Min Bet | €0.20 | €0.20 | €0.20 |
| Key Feature | Money coins + tumble + Random Wild | Position multipliers up to 1,024x | Bird CollectR + expanding grid |
Cosmic Clusters! is the most accessible slot in terms of variance and also has the lowest ceiling of these three slots. Sugar Rush 1000, also by Pragmatic Play, has a significantly higher top prize, with multipliers up to 1,024x, but because of high variance, the base game is very lean in between the bonuses.
Pirots 4 by ELK Studios features the innovative CollectR mechanic that adds extra complexity and fits the space theme of the game with proper plot lines; however, it has the lowest RTP among the three slots.
Verdict - Is Cosmic Clusters! Worth Playing?
Cosmic Clusters! appears to be a proper application of cluster pays from Pragmatic Play, rather than just another coin-based grid slot. The built-in value of the coins mechanic – when the explosion of a cluster transfers its entire value to the new symbol – provides an extra momentum for the base game, which is somewhat rare for mid volatility games. The main drawback is the low ceiling of 5,000x. Cosmic Clusters! is the best choice for medium-volatility players looking for an active session game with direct feature access without a steep learning curve.
James is a casino games expert on the Playcasino.com editorial team. With many years of professional experience at a leading casino game development company and a passion for playing casino games, James has become a true expert in slots, blackjack, roulette, baccarat, and other games.
James uses this expertise to provide reliable, insider advice through his reviews and guides, breaking down the game rules and offering tips to help you win more often. Rely on James's extensive experience for expert advice on your casino play.
