If you want the short version: this is a five-reel Push Gaming release with a published RTP of 96.33%, a gems and diamonds theme, and a free demo you can open without registering. That RTP is modestly above average, which is the main reason the diamond supernova 20 slot is worth a look rather than a pass. Much else about it, including volatility and any max win figure, has not been published.
Diamond Supernova 20 versus the average slot
Across the games in our database, the average return sits at 95.71%. This title is listed at 96.33%, a difference of 0.62 percentage points. That gap is small in absolute terms but it compounds with volume. Wager £2,000 over a session at the average return and expected loss is roughly £86; at 96.33% it is roughly £73. Thirteen pounds, on that turnover, is the whole of the edge you gain by picking the better number.
Ranked 2,024 by traffic, the game sits in the 89.9th percentile for popularity, so it gets played more than nine in ten titles we track. Popularity tells you nothing about how it will pay. It is a signal about discoverability and shelf position at casinos, not about mathematics. Use the RTP for the maths and the ranking only to gauge how easy the game is to find.
RTP breakdown: 96.33% in context
RTP is a long-run average, not a session promise. A 96.33% figure means the game is built to return £96.33 for every £100 staked across a sample far larger than any one person will ever play — millions of spins, not hundreds. Over 500 spins at £1 a spin, the expected return is £481.65, but the realistic range of outcomes around that number is enormous, and zero return is inside it.
Here are the figures that are actually published:
| Detail | Value |
|---|---|
| Provider | Push Gaming |
| RTP | 96.33% |
| Reels | 5 |
| Theme | Gems and diamonds |
| Type | Slot Machine |
| Popularity rank | 2,024 (89.9th percentile) |
| Free demo | Available |
Note what is not in that table: paylines, hit frequency, max win, volatility, bonus mechanics. Push Gaming has not published those for this title, so any specific number you see quoted elsewhere is unsourced. Treat it that way.
Volatility profile
No volatility rating has been published for this game, so nobody can honestly tell you whether it pays in small frequent amounts or rare large ones. That absence matters, because volatility, not RTP, is what determines how a session actually feels.
In general terms: a low-volatility slot returns its RTP through many small wins, so your balance drifts down slowly and sessions last longer on a fixed budget. A high-volatility slot pays the same percentage through far rarer, larger hits, which means long dry stretches and a much wider spread of outcomes. Two games with identical 96.33% returns can produce completely different bankroll experiences.
Without that label, the practical move is to find out empirically in the demo. Play a few hundred spins at a fixed stake and watch how often the balance moves and how deep the drops run. That gives you a rough feel for swing size. It does not predict anything, because every spin is independent of every spin before it.
Push Gaming as a studio
Push Gaming has 69 titles in our database with an average RTP of 96.32%. This game is listed at 96.33%, so it is a studio-standard release rather than an outlier in either direction. That consistency is the useful takeaway: with Push Gaming slots you can reasonably expect returns clustered near 96.3% instead of the wide spread some studios ship.
A few of their releases are listed slightly higher. Retro Tapes is the strongest of the group at 96.47%, about 0.14 points above this title, and Fat Banker sits at 96.43%. Neither gap is dramatic, but if you are choosing purely on published return, they are the better numbers.
What none of that tells you is how the games play. Studio averages describe mathematics, not mechanics, and two Push Gaming titles with matching RTPs can differ entirely in pace and structure.
Three Gems and diamonds alternatives worth comparing
The gems and diamonds category is crowded, with 484 titles in our database, so there is no shortage of substitutes if this one does not hold your attention.
Love Gems Hold and Win is the standout on paper at 97.10%, a full 0.77 points above this game. On £2,000 of turnover that difference is about £15 of expected value, which is the largest edge available among the comparisons here. Joker’s Jewels is listed at 96.50%, marginally ahead, and is one of the better-known titles in the category.
Gemonex is the third option, but no RTP has been published for it. An unknown return is a genuine drawback when you are comparing games on numbers, and it is reasonable to deprioritise it for that reason alone.
All three are alternatives on the basis of published return only. Nothing here tells you which one you will actually enjoy.
Getting the most out of the free demo
The Diamond Supernova 20 free demo runs in the browser with no account and no deposit, which makes it the cheapest possible way to find out whether the game holds your interest for more than ten minutes. Use it for what it is good at: checking pace, reading the paytable, seeing how the interface handles at speed.
What the demo cannot do is forecast real-money outcomes. Play money results carry no predictive weight, and a good demo run is not evidence of anything beyond variance. A useful habit is to pick the stake you would genuinely use for real and watch how long a realistic budget lasts at that level.
This is 18+ entertainment. Decide your budget before you start, treat it as money spent rather than money invested, and stop when you reach the figure you set. No stake pattern, spin timing or progression changes the expected return — every spin is independent and the 96.33% figure is unaffected by how you bet.
Should you play the Diamond Supernova 20 slot?
It is a reasonable pick with a caveat. The 96.33% return is 0.62 points better than the database average and matches Push Gaming’s own 96.32% standard, so on published mathematics you are in decent territory rather than being quietly shortchanged.
The caveat is how much is missing. No volatility rating, paytable structure, hit frequency or max win has been published, which means you cannot judge session behaviour before you play. That is why the demo matters more here than it would for a fully documented game.
If you are optimising purely for return, Love Gems Hold and Win at 97.10% and Retro Tapes at 96.47% are higher, and both are documented at least as well. If you already like Push Gaming’s output and want a gems title from the studio at its typical return, this one fits. Open the demo, run a few hundred spins at a realistic stake, and decide from there.
Frequently Asked Questions
Can I play Diamond Supernova 20 for free?
A free demo is available and runs in the browser with no deposit and no account needed. It uses play money, so results carry no real-money value. Use it to judge pace, stake levels and whether the game holds your attention, since Push Gaming has not published a volatility rating you could check beforehand.
What is the RTP of Diamond Supernova 20?
The published RTP is 96.33%, meaning the game is designed to return £96.33 per £100 staked across a sample of millions of spins. That is 0.62 points above the 95.71% average in our database. Over a few hundred spins, actual results will vary widely around that figure in both directions.
Is Diamond Supernova 20 high or low volatility?
No volatility rating has been published for this title, so there is no honest answer based on data. Low volatility generally means frequent small wins and longer sessions on a fixed budget; high volatility means rarer, larger hits and much wider swings. The demo is the only practical way to gauge it yourself.
Who makes Diamond Supernova 20?
Push Gaming developed it. The studio has 69 titles in our database with an average RTP of 96.32%, so this release sits right on their house standard. Other Push Gaming slots listed slightly higher include Retro Tapes at 96.47%, Fat Banker at 96.43% and Dinopolis at 96.40%.
How does it compare to Love Gems Hold and Win?
Love Gems Hold and Win is listed at 97.10%, which is 0.77 percentage points above this game's 96.33%. On £2,000 of turnover that is roughly £15 of expected value in its favour. Both sit in the gems and diamonds category, which spans 484 titles in our database, so substitutes are plentiful.
