Diamond Supernova 20, read from the game's own files

Diamond Supernova 20 is a classic-style slot from Push Gaming, released under its Reel Hot Games label. You get five reels, three rows and 20 fixed paylines. Line wins pay left to right. On top of that, three kinds of star scatter are confined to reels one, three and five: a blue set pays 25x your total bet, red 100x, gold 1,000x, and any mixed set 5x. There are no free spins, no wilds and no bonus buy. Push Gaming rates the volatility as low and publishes two return figures, 96.33% and 94.22%.

We took those numbers from two places: the studio’s own game page and the demo’s rules and settings files, read on 12 November 2026. Where the two disagree or one is silent, we say so below.

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How Diamond Supernova 20 plays

The in-game rules are short. A line win needs matching symbols running unbroken from reel 1. Each line pays only its highest combination, wins on different lines are added together, and scatter prizes come on top of any line wins from the same spin.

You choose one figure, the total stake, and the game spreads it across the 20 lines. That’s all the control you have: no line selector, no coin value. The rules don’t mention a gamble feature either.

Above, three jacks on one of the 20 lines return 0.10 from a 0.50 stake. Small, because the royals pay just 0.2x for three.

Paytable in multiples of your stake

The settings file lists nine line symbols in three bands: three high, two medium and four low. On the reels that means three diamond designs, the 7 and the bell, and the A, K, Q and J. Matching bands to artwork is our reading, since the file uses codes rather than names. The payouts below are converted to multiples of the total bet, so they don’t change with the stake you pick.

Only the top diamond pays for two in a row. A screen full of top diamonds would put five of them on all 20 lines: 20 × 50x, so 1,000x from lines alone.

The three star scatters

Stars can only appear on reels 1, 3 and 5, so a scatter prize needs one star on each of those three reels. The colour decides the prize:

• three blue stars: 25x total bet;
• three red stars: 100x;
• three gold stars: 1,000x;
• any mix of colours: 5x.

The prize table sits above the reels the whole time. With a 0.50 stake in the demo, the gold box showed 500.00 and the mixed box 2.50: exactly 1,000x and 5x, as the rules say. That’s the only “feature” in the game. There is no bonus round to trigger.

RTP and volatility

Push Gaming’s page gives two RTP figures for Diamond Supernova 20: 96.33% and 94.22%. It also says the RTP may vary by casino and can be found in the game’s panel and loading screen. The demo client we opened was the 96.33% build.

One detail the studio page doesn’t mention: the game’s code also carries two lower configurations, 92.22% and 85.29%. We have not seen either at a casino and can’t tell whether any operator uses them, but it’s one more reason to check the number before you play.

A 96.33% RTP means that over a very large number of spins the game pays back 96.33 for every 100 staked. For a single evening it predicts almost nothing.

Volatility is rated low by the studio. In practice that fits what the paytable suggests: lots of the money returns through small line wins (0.2x to 2.5x of the stake), while the big numbers sit almost entirely in the red and gold star sets.

Max win: about 1,020x

The client’s configuration lists a maximum win of 1,020x the total bet for every RTP version, with a probability of roughly 1 in 769 million spins on the 96.33% build. Push Gaming’s game page shows a “highest observed win” of 1,016.2x. That ceiling fits three gold stars (1,000x) plus some line wins on the same spin.

A good diamond spin, like the one above, pays around 6x the stake. Anything far beyond that needs the gold stars.

Bet range

The demo offered 25 stake levels from 0.10 to 100.00 per spin, with 0.50 as the default. That is the play-money setup. A real-money casino may use a different range, so take the demo figures as the studio’s default, not a promise.

Because the stake covers all 20 lines, each line gets one twentieth of it: 0.05 per line at a 1.00 spin.

Diamond Supernova 20 demo

The free version sits behind the “Play Game” button on the studio’s page for this title. After a tick-box age check (18+), a new tab opens with 1,000 credits of play money. Rules and paytable are the same files the paid game loads.

Access depends on where you are. From one of our connections the launcher returned an access error; through a UK connection it opened normally. Some licensed casinos have their own demo mode as well. We don’t embed the game here.

5, 20, 40 or 100 lines: which Diamond Supernova?

Reel Hot Games put out the same game four times with different line counts. Studio data for each, as published on its game pages:

All four carry the “low” rating and the same scatter prizes, paid as multiples of the total bet. On paper the gaps are tiny: RTPs within about 0.05 points, top observed wins between 1,006.3x and 1,040x. What changes is how your stake is spread, across 20 lines here and across 100 in the biggest version. So a search for “diamond supernova 40” or “100” leads to the same symbols and stars on a denser line map. We haven’t compared the line paytables of the other three versions.

Strategy: what actually changes the result

Each spin comes from a random number generator. The previous result doesn’t matter, the time of day doesn’t, and neither does how long the stars have stayed away. No pattern, bot or “signal” predicts the next spin, and anything sold as a predictor is a scam.

Three things are actually in your hands. Stake size scales every prize and every loss alike. The RTP version matters too: 96.33% costs less on average than 94.22%, and far less than 85.29% if that build is ever used. And time: the house edge applies to each spin, so more spins at the same stake mean a bigger expected loss.

Pick a budget, pick a stake that gives you enough spins to enjoy it, and stop when it’s gone.

Where to play: checks for NL, RO, DK, AT and ES

Diamond Supernova 20 only appears at casinos that carry Push Gaming’s games. Before you deposit, check the operator’s licence in the country you’re in. Short notes, checked against each regulator’s site in November 2026:

• Netherlands. The Kansspelautoriteit (KSA) lists every licensed provider in its Kansspelwijzer search. Cruks, the national exclusion register, blocks you at all legal Dutch providers for at least six months.
• Romania. ONJN publishes its list of licensed Class I operators and a blacklist of unauthorised gambling sites. Self-exclusion requests also go through ONJN.
• Denmark. Spillemyndigheden licenses operators. Its ROFUS register lets you exclude yourself for 24 hours, 1, 3 or 6 months, or permanently. StopSpillet, the authority’s helpline, answers on 70 22 28 25.
• Austria. Gambling is a federal monopoly. The online casino offer runs under the lottery concession held by Österreichische Lotterien (win2day). A new Glücksspielgesetz that would open online licensing was sent to the EU for notification in August 2026 and was not in force when we checked.
• Spain. The DGOJ publishes the list of licensed operators. Signing up to its RGIAJ register bars you from online gambling with licensed operators.

Whichever site you use, open the game’s info panel and check the RTP line before you spin.

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Sources

• Push Gaming game pages: Diamond Supernova 20, 5, 40, 100
• Demo client rules, paytable and stake settings, read 12 November 2026
• Regulators: KSA, ONJN, Spillemyndigheden ROFUS, BMF Austria, DGOJ

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