Blue velvet, sparkling gems and a 777 up top — Supreme Diamond XXL is 3 Oaks doing a modern classic slot with a jackpot ladder pinned to the left rail. I played it on the €1.00 bet and watched cash-value diamonds drop in a hold-and-win, but I couldn't land a complete feature round, so here's what I can actually verify.
Seven stops around the ride — what it is, how it plays, and where the money really moves.
Supreme Diamond XXL is a classic-style slot dressed sharp: a deep blue backdrop, a big cut diamond over the logo, and a symbol set of green triangles, blue rhombuses, purple squares, silver bells, stacked BAR tiles and a red 777. It's 15 lines across a compact reel set, and it reads at a glance — no clutter, no guesswork. 3 Oaks know this genre and it shows.
The draw here is the fixed-jackpot ladder standing on the left rail: GRAND 1,000.00, MAJOR 100.00, MINOR 30.00 and MINI 15.00, all shown at the €1.00 bet. Those are the values I read straight off the HUD. The GRAND at 1,000.00 lines up exactly with the slot's 1,000x max win — so the top of the ladder is the top of the game. No hidden ceiling above it.
The feature is a hold-and-win respin: special diamond symbols land carrying cash values — I saw a MINI tag and a pair of 5.00 diamonds drop in on one respin — and they stick while the rest of the reels spin for more. Fill enough and you climb the ladder toward the jackpots. There's a BONUS button top-right and an Additive symbol and Sticky Symbols layer feeding the collect. It's the familiar coin-respin loop, competently built.
Two things I'm going to be straight about. First, 3 Oaks don't publish an RTP figure for this one that I could confirm, so I'm not quoting a percentage — I won't guess a number that decides how much of your money the game keeps. Second, I only reached the cash-diamond collect, not a completed jackpot round, so I can't tell you what a full feature returns. The 1,000x GRAND is real; my session didn't reach it, and I'm not pretending otherwise.
| Jackpot tier | Value (at €1.00 bet) |
|---|---|
| Jackpot ladder — read from the HUD | |
| GRAND | 1,000.00 |
| MAJOR | 100.00 |
| MINOR | 30.00 |
| MINI | 15.00 |
The four jackpot values above were read directly from the left HUD at a €1.00 bet on 17.05.2026; the GRAND of 1,000.00 matches the slot's 1,000x max win. There was no separate symbol pay-table panel to open, so per-symbol line values aren't listed, and 3 Oaks don't publish an RTP figure I could confirm — so none is quoted.
Played on the €1.00 bet, demo build, no buy — I wanted to see the base game and get into the hold-and-win before spending. Two frames off my screen: the classic gem board, and cash-value diamonds landing in a respin.
The honest tally: my balance drifted from 994.00 down to 980.00 across the frames I captured, which is the ordinary shape of a classic slot ticking over between features. I did reach the diamond collect — a MINI tag and two 5.00 diamonds locked in — but I didn't complete a full jackpot round this session, so I can't tell you what the GRAND actually pays in practice. What I can say: the ladder is legible, the collect is satisfying, and I'd want an RTP figure before committing real money. — Tess
Screenshots by Tess Hale · session s11 · May 2026 · €1.00 bet, demo build, partial feature (collect reached, no full round)
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Ex-arcade cashier turned pokies writer. Tess reads a slot the way she used to read a coin-op: what it costs to play, what the machine actually gives back, and whether the “big one” is real or just paint on the glass. Sceptical, warm, allergic to hype.
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