Winna Review

A rewards casino that stopped spelling out its rewards

Winna is a crypto casino and sportsbook for adults (18+) that launched in 2024 with $15 million in seed funding and a public co-founder and CEO, Paul Martens. It sold itself on rakeback: money handed back to you from what you bet. Two years in, the most important thing to know is that the help pages we read give no rakeback rate, and Winna's own help centre shows rewards being pulled back. Lossback, its refund of part of your net losses, used to be claimed in the VIP Center. The help article now says it "can no longer be claimed directly", has to be requested from support, is reviewed account by account and may come with wagering conditions.

The players have noticed. Winna has 2.8 out of 5 on Trustpilot from 688 reviews, and September's reviews include players saying level-up bonuses, rakeback and reloads have shrunk, and others saying the site feels empty. Third-party traffic estimates fell from about 6.4 million visits in March 2026 to 3.4 million in August.

Winna takes crypto only.

Check the banned list, even if a help page says VPN

Section 4.3 of the terms, checked on 25 October 2026, bars the USA, the UK, Ontario, New Brunswick, Germany, the Netherlands, Spain, Israel, Russia and China, among others. Yet the same traffic estimates put the US as Winna's biggest source of visits (about 19%), ahead of Australia (17%), Norway and Canada (8% each).

Winna's own pages pull in two directions here. The help article on free bets says "Winna is a VPN-friendly casino" and tells players in restricted regions they can use one. The countries article says a restricted region gets a geo-block pop-up and the account is set to withdrawal-only. The terms allow Winna to void bets, withhold withdrawals and close accounts for breaking its rules. If you are in a listed country, believe the terms, not the help page, because the terms are what get applied when you try to cash out.

Who runs it

The terms name the operator as GG Gaming LLC, registered at the Sabana Business Center in San José, Costa Rica. The site footer gives it as GG Gaming SRL (the Spanish form of the same company type), registration number 3-102-916906. It is licensed by the Tobique Gaming Commission, a regulator in New Brunswick, Canada, under the Tobique Gaming Act 2023. The commission's public licence-holder list, which we read on 25 October 2026, shows GG Gaming S.R.L as a B2C licensee with an expiry date of 2027-05-08. Complaints go to support first, then to an outside dispute body named in the terms, EGIS, and the terms are governed by Costa Rican law. That is a thin safety net compared with a UK or EU licence.

What the games cost

House edge is the share of each bet the casino keeps over the long run. At 1%, you lose about $1 per $100 bet on average, with big swings either way in a short session.

Game	House edge	Source
Dice, Limbo, Keno, Plinko	1% (Plinko's top risk level 2%)	Winna game pages
Mines	2%	Winna game page
Roulette	2.7%	Winna game page
Originals, measured from money flows	1.62%, against 1.6% declared	on-chain estimate, gamstat
Sportsbook	about 8.2% hold	on-chain estimate, gamstat

The 1.62% is a blend across all the in-house games, the 2% ones included, so it landing above 1% fits what Winna declares. The sportsbook estimate is higher than the 7% estimated for Stake and 5.6% for Gamdom.

The Originals are provably fair: each result comes from an HMAC-SHA256 hash of a server seed, your own client seed and a bet counter, and the help centre publishes the code for each game so you can recheck a round after the seed is revealed. Each game has a win cap, for example $200,000 per bet on Dice and Limbo and $400,000 on Mines, so a huge multiplier on a big stake can pay less than it shows. For slots, the help centre says every game runs at the highest RTP setting its studio offers.

What provablyfair.org found

provablyfair.org, an independent group that tests casinos' provably fair claims, has looked at Winna twice.

Plinko paid less for three months. From 17 December 2025 to 10 March 2026, Plinko ran on changed probability tables that returned about 98% instead of the stated 99%. On 16-row High risk, the 1000x edge buckets came up about 32% less often (1 in 48,188 instead of 1 in 32,768). Every bet still passed Winna's provably fair check, because that check confirms the seeds, not the odds behind them. Winna's 10 March incident report called it a configuration error and offered refunds, and a provablyfair.org re-check on 14 March found the fair logic back in place. Sources: the investigation and its thread.

VIP Slide could not be checked. On 15 and 16 May 2026 a player wagered about $10.5 million in 62 bets on a private, account-only VIP version of Slide. provablyfair.org found it used a fresh operator seed every bet, a bet counter stuck at 0 and a client seed fixed to a 2023 Bitcoin block, with no published chain, so nothing a player could check locked each result in before the bet. In October Winna published all 13,125 VIP Slide rounds. provablyfair.org recalculated them and every result matched its seed, but its verdict stayed the same: VIP Slide was not provably fair. It says that is not a finding that any result was manipulated. Winna's CEO Paul Martens says the game wasn't rigged and that an independent dispute-resolution body ruled in Winna's favour. Sources: the investigation, provablyfair.org's 24 October update and Paul Martens' reply.

The public Slide that launched on 18 May uses a published hash chain and a future Bitcoin block, the design provablyfair.org says VIP Slide should have had.

The VIP ladder and what code betrefs does

VIP level comes from your total wagered, which counts every bet, not what you deposit. Bronze 1 starts at $1,000 wagered, Silver 1 at $20,000, Gold 1 at $100,000 and Platinum 1 at $500,000. The instant rakeback can be claimed every 7 minutes, but Winna only describes it as "a percentage of your wagered amount" that depends on your level. Silver adds a weekly boost and chat rain, Gold adds weekly free spins and a monthly sportsbook free bet (only if you wagered $10,000 in 30 days), and reloads and lossback wait until Platinum.

Our listing carries an "up to 60% rakeback" figure for VIPs, but we found no source for it on Winna's own pages, checked today, so don't count on it.

Code betrefs is Betrefs' referral code. You enter it under VIP, Promo Code, or sign up through our link. We have no separate bonus terms for the code, so treat it as a referral tag: your rewards come from the same VIP ladder as everyone else's.

High rollers get pitched the VIP transfer: deposit $100, show $1 million wagered at another casino and get matched perks for 30 days. One August reviewer says they joined 18 months earlier when Winna was courting high rollers with this transfer, and a September review is titled "Winna The Bait and Switch Casino".

Getting money in and out

Winna takes 13 coins, including Bitcoin, Ethereum, USDT, USDC, Litecoin, Solana, XRP, TRX, DOGE and TON. USDT works on Ethereum, Tron, Solana or BNB Chain. Send on the exact network the deposit page shows, because coins on the wrong network may be lost.

Our data lists Winna as no KYC (no identity check) with email sign-up. The terms are stricter than that:

• Wager each deposit once before withdrawing it.
• $20 minimum, $10,000 per 24 hours, unless a VIP host raises it. Several withdrawals within 24 hours may carry a processing fee, on top of the network fee shown before you confirm.
• Withdrawals of €2,000 or equivalent may trigger enhanced checks. Winna can ask at any time for photo ID, a proof of address under 3 months old and proof of payment method, and can hold withdrawals until you send them. Checks usually take up to 72 hours, and a withdrawal can be cancelled if the documents don't arrive within 30 days.

Withdrawals aren't instant. One August reviewer was still pending after 15 hours. On the other side, gamstat estimates about $33.7 million left Winna in 30 days against $32.5 million deposited, with about $8.1 million in tracked treasury wallets, so money is moving out.

What reviewers say now

Recent 1-star reviews keep to the same themes: a Diamond 2 player calling rakeback tiny and reloads small or missing, players saying the chat is empty, and an affiliate saying they still have no clear answer about commissions owed since March 2025. Others claim results far below the stated RTP, one saying a $25 deposit was gone in minutes. Results over a few dozen bets say nothing about the edge either way; the provably fair check does.

Account safety and breaks

Turn on two-factor login, with an email code or an authenticator app. Self-exclusion is set per betting category from the Winna Cares section of your profile, or by email or live chat, and the 24-hour cooldown can't be cancelled once confirmed.

Tanzanite's checklist

Tanzanite, a crypto casino data site, rates casinos on a checklist of five areas: provably fair games, responsible gambling tools, customer support, published RTPs, and operations (proof of funds and six months running). It doesn't certify Winna. On its Winna page, checked 29 October 2026, Winna offers no wager or loss limits and, by Tanzanite's reading, doesn't clearly publish RTPs (we found the house edges above on Winna's game pages).

Who Winna suits

Crypto players outside the banned list who play the 1% Originals and want a clean site. If you came for big published rakeback or reloads, those now sit behind $500,000 of wagering and a support request. Set a budget before you deposit.