Quick answer
Supreme Diamond XXL is a 3 Oaks Gaming slot (2026) with a 1,000x max win. It uses 15 paylines with respins, hold and win and bonus buy. An official free demo is available.
Key specs
- Max win
- 1,000x
- Grid
- 3×5
- Pays
- 15 paylines
- Released
- 28 May 2026
- Bet range
- $0.20–$90
- Jackpot
- Fixed
Not published by the provider: RTP, volatility
Top-rated casinos (check the game is available)
We haven't confirmed which partner carries this game.
- Aurivo Casino100% up to $1,000 + 200 Free Spins30x bonusGet 200 spins + 100% at Aurivo Casino (opens in new tab)
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Key terms
18+. New customers only. Min deposit $20. 30x bonus wagering requirement. Max bet $5 while wagering. Free spins on Book of Dead at $0.20 per spin. Spins credited in daily batches of 20 over 10 days. Offer valid 30 days. Full T&Cs apply. Please gamble responsibly.
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Key terms
18+. New customers only. Min deposit $20. No wagering on winnings. Free spins on Big Bass Bonanza at $0.10 per spin. Offer valid 7 days. Full T&Cs apply. Please gamble responsibly.
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18+. New customers. Min dep $50. 40x bonus wagering. Max bet $10. 60 days. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $50. 40x bonus wagering requirement. Max bet $10 while wagering. Cashback: 10% of net casino losses each week (Monday to Sunday), paid as cash with no wagering every Monday, up to $500 a week. Offer valid 60 days. Full T&Cs apply. Please gamble responsibly.
Game availability varies by casino and country.
Themes:
Free demo Members
Try Supreme Diamond XXL with play money before deciding whether to play for real. Official 3 Oaks Gaming demos are free for GambGenius members.
Play the Supreme Diamond XXL demoOfficial demo by 3 Oaks Gaming · play money only · 18+Opens on 3 Oaks Gaming's demo siteHow to play Supreme Diamond XXL (members only)
Wins are paid when matching symbols land on an active payline, usually left to right starting from the leftmost reel. Your total stake is spread across the lines, and each line win is the line bet multiplied by the symbol's paytable value.
Supreme Diamond XXL is played on a 3×5 grid with 15 paylines.
- Set your stake. Choose your total bet per spin between $0.20 and $90. Wins are paid as multiples of this stake.
- Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
- Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.
- Optional bonus buy. Where permitted, pay a fixed price to start the bonus directly.
The full Supreme Diamond XXL guide: how winnings work, 4 features and 2 strategy tips
- 4 features explained: respins, hold and win, bonus buy, fixed jackpots
- Bonus-buy risk breakdown
- Strategy tips for Supreme Diamond XXL
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
The 1,000x max win at a $1 stake
The top prize is capped at 1,000x your stake. On a $1 spin that is $1,000; on $0.20 it is $200. When the cap is reached the round usually ends immediately.
Features explained (members only)
4 features explained: respins, hold and win, bonus buy, fixed jackpots
Respins
Selected reels or the whole grid spin again without a new stake, usually triggered by a specific symbol combination or near-miss feature.
Hold and win
Landing enough special cash or coin symbols starts a respin feature: those symbols lock in place, the respin counter resets each time a new one lands, and their values are collected when the feature ends.
Bonus buy
Lets you pay a fixed multiple of your stake to enter the bonus feature straight away instead of waiting for it to trigger. It raises variance considerably and is not available in every country (it is banned in the UK).
Fixed jackpots
Jackpot prizes set at fixed multiples of your stake, such as Mini, Minor, Major and Grand.
Strategy tips (members only)
- Treat bonus buys as high-risk. Buying the feature concentrates your budget into a few large-variance rounds. Many results return less than the price paid. Read our bonus buy guide first.
1 more tip
- Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.
More on this in slot RTP and volatility explained and bankroll management.
Questions
Frequently asked questions
Who makes Supreme Diamond XXL?
Supreme Diamond XXL is developed by 3 Oaks Gaming and was released in 2026.
What is the max win on Supreme Diamond XXL?
The maximum win on Supreme Diamond XXL is 1,000x your stake, which is $1,000 on a $1 spin.
Can I play Supreme Diamond XXL for free?
Yes. GambGenius members can open the official 3 Oaks Gaming demo of Supreme Diamond XXL, which runs on 3 Oaks Gaming's own demo site. It uses play money only, so demo wins can't be withdrawn, and it is for players aged 18 and over.
Does Supreme Diamond XXL have a bonus buy?
Yes. Supreme Diamond XXL includes a bonus buy option, although it is unavailable in some countries such as the UK.
Where this data comes from
- 3oaks.com Provider
- slotcatalog.com Slot database
Specs come from the provider's own site and 1 independent slot database. Casinos can run lower-RTP versions, so always check the game rules before you play.
Game artwork © 3 Oaks Gaming, shown to identify the game.
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