Blacklisted Site

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country-accepted-icon Costa Rica CR Sports Bettors Accepted

CarbonSports Review

by Bookmakers Review | Updated October 16, 2023
About CarbonSports

CarbonSports has been online since 2005. The sportsbook holds a BMR rating of 2, which means that they are currently on the sportsbook blacklist and should be avoided. Players are at risk of being slow paid or having winnings confiscated with blacklisted sportsbooks.

Check out all of our online sportsbook ratings in the 2023 Betting Sites Guide, which is updated weekly throughout the year.

CarbonGaming Reputation

CarbonGaming has been online since the mid-2000s, but it received a raft of upset customer complaints. They reported that payouts were unreliable, and it became notorious as a slow-paying sportsbook.

We have heard that CarbonGaming, Sportsbook.ag and associated sites have recently been paying out in a timely manner. This could be down to a change in approach, as they are no longer accepting new customers. The company may be happy with the existing player base, and it has the liquidity to pay those customers if they win.

However, issues may arise again in the future if it begins welcoming new players, so it remains on our blacklist with a D- rating.


Customers have never had any problems picking a deposit method and putting money into their accounts at Carbon and its sister sites. The issues always arose when they requested payouts. Slow payouts went on for a long time, and players said accessing customer service was like speaking to a brick wall.

More recently, customers have reported that they have been paid out within 24-72 hours of requesting a withdrawal via Bitcoin, which is great news. However, we would like to see this sportsbook demonstrate its ability to meet payout requests in a timely manner over a longer period of time before we move it to a higher rating.

Bonuses at CarbonGaming

You will not currently find a welcome bonus at CarbonGaming, as it is not accepting new players right now. When you visit the site, CarbonGaming.ag, you will see a login option only, with no registration form.

When it was accepting new customers in the past, there was a cash welcome bonus of around 25% to 30%. A similar offer may be rolled out in the future if it decides to target new players, but there are not currently any incentives to sign up.

CarbonGaming Security & User Experience

CarbonGaming was always a no-frills offshore sportsbook with a functional layout and reasonably competitive odds on major sports leagues. The only major issues were the slow payments and the poor customer service. It is not currently investing in improving the user experience, as it is not taking on new customers right now.

CarbonGaming Customer Reviews

Customer reviews are mixed. Some players were burned by historical payout issues, while newer players said it does not deserve to be on the blacklist. It is not currently accepting new users, so there are no recent reports to go on.

Alternatives to CarbonGaming

Lots of high-quality offshore sportsbooks are currently accepting new international and American players. These are our A+ rated sports betting sites:

  • Bookmaker | A highly reputable offshore betting site that prides itself on publishing lines before rivals.
  • Heritage Sports | An offshore sportsbook with a loyal customer base. It offers reduced juice betting lines, cashback promos and prompt payouts.
  • Bovada | One of the most famous names in the offshore sports betting and casino gaming industry. It also has a poker room that online poker players will love. Bovada always pays out quickly, and it offers a wide range of betting options.
  • BetOnline | Another leading offshore betting site that offers a sportsbook, racebook, casino games and poker room, with very rapid withdrawals offered.
  • BetAnySports | An offshore sportsbook that offers heavily discounted lines and secure payouts.

Our offshore betting sites are primed with your favorite games, a variety of betting markets and accept a range of payment methods for the convenience of every type of bettor. 

FAQs – 12Bet

How long has CarbonGaming been in business?

CarbonGaming has been online since 2005. The company has been in operation since 1996, offering sites such as Sportsbook.ag, CarbonGaming and PlayersOnly. We added CarbonGaming to our blacklist after receiving several reports of it slow-paying customers. 

Is CarbonGaming legit?

CarbonGaming has a checkered history, as the company has slow-paid winning bettors over the years. Many customers now view it as a legit operator, but we urge readers to proceed with caution. It is not currently accepting new players anyway, but if that changes, steer clear of this site.

Is CarbonGaming a reliable online sportsbook?

It depends on who you ask. In the past, CarbonGaming was widely viewed as an unreliable online sportsbook due to slow-paying antics and poor customer service. However, it now appears to have a loyal customer base, featuring players that find it reliable.

How can I deposit funds at CarbonGaming?

New players cannot currently deposit funds at CarbonGaming, as it is not welcoming any sign-ups right now. Existing customers can use their usual methods, such as Bitcoin or a credit card.

Does CarbonGaming pay out?

New players cannot currently deposit funds at CarbonGaming, as it is not welcoming any sign-ups right now. Existing customers can use their usual methods, such as Bitcoin or a credit card.