Supreme Diamond XXL

Supreme Diamond XXL is a slot from developer 3 Oaks Gaming, with the "XXL" tag in the name hinting at an oversized, gem-and-jewel-themed release, likely built around classic diamond and precious stone symbols given the studio's back catalogue. Full details on reel layout, paylines and maximum win haven't been published yet.

What We Know So Far

Supreme Diamond XXL has a confirmed return to player of 95.67%, a figure that sits just below the market average for online slots but is still within a broadly reasonable range. It's not the strongest RTP on the market, so players who track payout percentages closely may want to factor that in when deciding how much time to spend on the game.

Volatility

The confirmed volatility rating for Supreme Diamond XXL is medium, suggesting a balance between win frequency and win size rather than either extreme — a fairly approachable setting once the game is fully live and available to spin.

What "XXL" Slots Typically Offer

Releases carrying an "XXL" or similarly oversized branding often widen their symbol set or reel dimensions compared to a base version of the same theme, sometimes pairing that with stacked or oversized premium symbols to boost the visual impact of bigger wins. Whether Supreme Diamond XXL follows that pattern specifically hasn't been confirmed, so it's worth treating as an educated guess rather than a stated feature.

Max Win and Betting Range

No maximum win multiplier or betting range has been confirmed for Supreme Diamond XXL yet. Reel count and paylines are also unconfirmed at this stage, so any specific figures circulating elsewhere should be treated as unverified until 3 Oaks Gaming publishes the full game specification.

Verdict

Supreme Diamond XXL is shaping up as a gem-themed, medium-volatility release from 3 Oaks Gaming, though with an RTP a little under the typical average and several key details — max win and bet range especially — still outstanding, it's worth checking the in-game paytable directly once available. The free demo at johnessyslots is the best starting point for getting a genuine feel for the game before deciding whether it's worth playing for real money.