About Us
Online Casinos is an independent research site built for US players comparing online casinos. We focus on one question above all: which sites offer the biggest, fairest welcome bonuses, and what does it actually take to use them? Everything below explains how we reach our rankings and what we expect readers to check for themselves before signing up anywhere.
Why We Lead With Bonus Size
A welcome bonus is usually the first thing a new player sees, and it's often the most misunderstood. A headline figure like "410% up to $10,000" tells you almost nothing about how easy that money is to actually use. So while our rankings start with the size of the offer, our write-ups go further and look at the wagering requirements, expiry windows, maximum cashout limits and game restrictions attached to each one. A large bonus with unreasonable terms is worth less than a smaller one you can realistically clear.
How We Assess Each Casino
Commission never buys placement on this page or anywhere else on Online Casinos. Every site is assessed against the same criteria:
- Licensing status — whether the operator discloses licensing information and operates within a regulated framework
- Bonus terms — the wagering requirement, time limit and any games excluded from contributing to it
- Game variety — the mix of slots, table games and live dealer options available
- Payment options — what US players can realistically use to deposit and withdraw
- Site security — whether HTTPS encryption and account protection tools like two-factor authentication are in place
Our editorial ratings reflect this research and reading of published terms. We do not deposit, play or withdraw on operators' behalf, and no rating here should be read as a guarantee of any outcome — gambling always carries a house edge, and results are never guaranteed.
A Closer Look at Our Top-Ranked Sites
Raging Bull tops our list mainly because of the size and structure of its welcome offer: 410% up to $10,000 plus 50 free spins. That's a substantial match, but a bonus of this size typically carries a higher wagering requirement than smaller offers, so it suits players planning to deposit and play consistently rather than make a single small deposit. Read the full terms before opting in — the headline percentage is only part of the picture.
Uptown Aces follows closely, with a 600% new-player match — the highest percentage on this page. A bonus this large usually comes with a capped maximum deposit for the match to apply and a longer play-through requirement, so it rewards patience more than quick withdrawals. It's a strong pick for players who want maximum bonus funds to explore the game library over time.
Ignition takes a different approach with a 300% welcome bonus up to $3,000. It's a smaller percentage than the two above it, but Ignition is widely known for its poker and live dealer offering, which can make the bonus easier to put to genuine use across a wider spread of game types. The lower ceiling means high rollers may find the cap limiting compared with Raging Bull or Uptown Aces.
What You'll Find at These Casinos
Beyond the welcome bonus, the sites we cover typically offer several categories of real-money games:
- Slots — the largest category by volume, ranging from classic three-reel titles to modern video slots with bonus rounds
- Table games — blackjack, roulette and poker variants, usually available in both standard and higher-stakes formats
- Live dealer games — streamed tables with a human dealer, giving a closer approximation of an in-person casino experience
- Specialty and instant-win games — including sweepstakes-style formats such as gold coin and sweeps coin play, which some sites on this page use in place of, or alongside, traditional real-money wagering
Several operators covered here also run adjacent products such as sports betting or poker rooms alongside their casino offering, so it's worth checking each site's full menu rather than assuming the casino is the only thing on offer.
How Deposits and Withdrawals Typically Work
Payment options vary by operator, but US players commonly encounter a mix of the following:
| Method | Typical use |
|---|---|
| Debit cards | Fast deposits, though some banks flag gambling transactions |
| Cryptocurrency | Often faster withdrawals and lower fees, offered by several sites on this page |
| Online banking / ACH transfer | Direct bank-to-site transfers, used mainly for deposits |
| Digital wallets | Where supported, a middle-ground option between cards and crypto |
| Money orders / cash transfer services | Slower but available where card processing is restricted |
Withdrawal times differ by method and by operator, and most sites require identity verification (KYC) — proof of ID and address — before releasing a first withdrawal. This is a standard anti-fraud measure, not a sign of a problem, but it does mean your first cashout is rarely instant.
Eligibility and Legal Standing
Real-money online gambling in the US is governed at the state level, and availability depends entirely on where you live. In general, players must meet the applicable state's minimum gambling age — commonly 21, though this varies by activity and state — and be physically located within a state where the activity is permitted at the moment of play. Some of the sites on this page operate as sweepstakes-style casinos, which follow a different legal structure than traditional real-money gambling and are available more broadly, while others require you to be within a specific regulated state. Always confirm a site's legal status in your own state before depositing.
Playing Responsibly
None of the offers above should be treated as a way to make money. Bonuses lower the cost of play; they don't change the underlying math of the games, and RTP figures published by developers are long-term averages, not predictions for any single session. Before you deposit anywhere:
- Set a deposit and time limit you're comfortable with, and stick to it
- Never gamble with money you can't afford to lose or that's borrowed
- Use strong, unique passwords and enable two-factor authentication where it's offered
- Stop if gambling stops being enjoyable or starts affecting your finances
Self-exclusion programs and deposit limit tools are available directly through most operators, and national support is available through organizations such as the National Council on Problem Gambling. Our Responsible Gambling page has more detail on setting limits and finding support.
Where Online Casinos Fits In
Online Casinos does not accept bets and is not a casino operator. We earn revenue through affiliate partnerships when readers click through to a listed site, but this never affects how a casino is ranked or reviewed — operators cannot pay for a better position. If you're outside the US or looking for a different market, our page on non-Gamstop casinos for UK players covers that separately. For anything else about how this site works, our Contact Us page is the place to reach us, and our Terms and Conditions set out the full detail on how the site operates.