Contact Us

This is the page to use when you want to reach the editorial team at Online Casino Sites about anything we publish — most often free spins offers, the wagering terms attached to them, or a listing you think is out of date. We are an independent research and comparison site for US readers aged 21 and over. We do not run a casino, hold player funds, or have access to anyone's account.

Write to us at [email protected]. Please tell us which page you were reading, which operator you are asking about, and the date you saw the offer. Bonus terms change without notice, so a date makes it far quicker for us to check what you saw against what is live now. We aim to reply to research and correction queries in the order they arrive; we cannot promise a fixed response time, and we do not staff a phone line or live chat.

What we can help with — and what only the casino can fix

Bring this to us	Take this to the operator or regulator
A free spins offer on our site that no longer matches the casino's own terms	Spins that did not credit to your account after you deposited
An unclear explanation of wagering requirements, max bet caps or cashout limits	A withdrawal that has been held, reversed or paid short
A factual error, broken link or missing condition in a review	Identity verification (KYC) documents, source-of-funds requests, account closure
A suggestion for a casino, payment method or topic we should cover	Self-exclusion requests and deposit or loss limits on a live account
Questions about how we rank and where our revenue comes from	Formal complaints, which follow the operator's published complaints procedure first

If your issue is about your own money or your own account, the operator's support team is the only party who can act. Contact them in writing, keep the thread, and note the reference number. If they cannot resolve it, escalate through their published complaints procedure and then to the regulator that licensed them in your state. Our responsible gambling resources cover self-exclusion and limit tools if that is what prompted you to write.

How we fund the site

Online Casino Sites earns commission when a reader follows a link to a casino and opens an account. That is worth stating plainly on a contact page, because it is the question readers ask us most often. Commercial relationships do not buy a position in our lists or a higher editorial rating, and we publish the limitations of operators we earn from. If you believe a ranking looks bought, say so in an email and we will explain the reasoning behind it or correct it.

Free spins questions we answer most often

Because free spins drive most of the mail we get, here is what our replies usually come down to — and the detail worth sending us if you want a more specific answer.

• "Free" rarely means no deposit. Most spins on our top list are bundled with a deposit match. Raging Bull's headline is 410% up to $10,000 plus 50 free spins, and the spins arrive with the deposit, not before it. Ask us about a specific offer and we will tell you which part, if any, requires no money down.
• Spin value is capped. Operators set the per-spin stake and the game it applies to. Slots of Vegas advertises a 375% bonus plus 50 free spins on Cash Chaser — the named title is the condition, not a suggestion.
• Winnings from spins are usually bonus funds. They carry playthrough before withdrawal, often with a maximum cashout on top.
• Expiry runs short. Spin credits and the wagering clock attached to them typically expire well before the account does.
• No-wagering offers exist but read differently. Magician Bet promotes a 101% no wagering bonus; when playthrough is removed, expect tighter caps elsewhere. Send us the terms page and we will point to what is doing the work.

Three operators readers ask about most

Raging Bull — 410% up to $10,000 + 50 free spins

It sits top of our list and attracts the most correspondence, largely because the headline percentage is the largest on the page and readers want to know what it actually unlocks. Our editorial rating is 10.0, which reflects the breadth of the offer and the clarity of its published terms, not a customer satisfaction survey. The limitation is inherent to the structure: a 410% match at the top end requires a deposit most readers will never make, the free spins are a small side component, and the spins and bonus cash are governed by separate conditions. Ask us about the wagering multiple and the max cashout before you judge the number.

Magician Bet — 101% no wagering

Included because it is the clearest counterweight on our list to headline-chasing percentages. A no-wagering bonus means winnings are not locked behind playthrough, which matters more to most readers than a bigger multiplier they cannot clear. Rated 9.9. The trade-off is size: 101% is modest next to the rest of the table, and no-wagering offers generally come with lower ceilings and tighter qualifying deposit rules. If you write to us about this one, it is usually worth comparing the realistic withdrawable amount rather than the advertised match.

Slots of Vegas — 375% bonus + 50 free spins on Cash Chaser

This is the offer that generates the most "why won't my spins work on this game" emails, which is why it earns its own note here. The spins are tied to a named slot, Cash Chaser, and they will not credit or function elsewhere. Rated 9.6. The limitation is that game-locked spins remove your choice over RTP and volatility — you play the title the operator picked, at the stake it set. Check the game restriction before depositing rather than after.

Uptown Aces (600% for new players), Card Crush, Zumba Cards, BetUS, Amazon Jackpots, Slots and Casino and Bets.FM also appear in our rankings, and we are happy to explain any of their terms by email. Note that several of these are sweepstakes-style offers denominated in SC rather than dollars, and Bets.FM's 225% plus 225 free spins is quoted up to 1 BTC — a crypto offer, with the conversion and volatility questions that follow.

Payment, cost and timing questions

Reading our site costs nothing. Everything downstream — deposits, wagering, withdrawals — sits between you and the operator, and we have no visibility into it. That said, these are the payment points we can explain generally, and the ones worth asking about before you commit:

• Minimum deposit to qualify. A free spins offer almost always has a qualifying floor. Deposit below it and the spins do not credit, and support will rarely apply them retroactively.
• Method exclusions. Some US operators exclude certain deposit methods from bonus eligibility. Prepaid cards and occasionally e-wallets are the usual exclusions.
• Common US methods. Debit and credit cards, ACH bank transfer, wire, and crypto where offered. PayPal availability varies by operator and state — verify it on the cashier page rather than assuming.
• Fees. Deposits are usually free; withdrawals may carry a processing fee, and card issuers can treat gambling deposits as cash advances. Check both ends.
• Withdrawal timing. Nothing pays out before KYC clears. Expect document checks on a first withdrawal, plus operator processing time before the payment method's own clearing time starts.
• Limits. Minimum withdrawal amounts, weekly or monthly caps, and separate max cashout rules on bonus winnings are all common and all disclosed in the terms.

If you send us a screenshot of a cashier page or a terms clause you cannot parse, we will read it with you. We will not tell you what a withdrawal will pay or when it will land — no one honest can.

What our coverage includes beyond free spins

Readers often write asking whether we cover more than bonuses. We do. Our reviews look at slot libraries and progressive jackpots, table games including blackjack, roulette and baccarat, live dealer rooms, the software providers behind the titles, published RTP figures and volatility ratings, RNG certification, and how all of it behaves on mobile browsers and apps. Several operators we list also run sportsbooks, poker rooms or racebook products alongside the casino — those sit under different terms, different bonus structures and sometimes different licensing, so a casino free spins offer will not usually apply to a sports bet. Ask if you are unsure which product a promotion belongs to.

Eligibility and legal standing in the US

You must be 21 or older to use the operators we cover, and physically located where play is permitted. US online gambling is regulated state by state rather than by a single federal licence, so legal availability differs depending on where you are. Some sites listed here operate under state regulatory approval; others accept US customers from offshore or run as sweepstakes and social casinos, which is a different legal model with different consumer protections. Accepting US players is not the same as being licensed to serve them, and we say so on the pages where it applies.

Before depositing, check the operator's stated licensing and its list of restricted states, and confirm your own state's position. Winnings may be taxable — that is between you and the IRS and your state tax authority, and we cannot advise on it. Our terms of use set out the limits of what this site is, and our editorial background explains who writes it.

Responsible gambling contacts

If gambling has stopped being entertainment, do not email us first. In the US, the National Council on Problem Gambling operates the 1-800-GAMBLER helpline, available 24 hours a day. Operators are required to offer self-exclusion, deposit limits and loss limits on request, and blocking software can restrict access at the device level. We keep practical detail on those tools on our player protection page. Gambling is not a way to make money or solve a financial problem, and no bonus changes that.

Corrections and how we handle them

Our content is researched and verified against operators' published terms and regulator sources — we do not claim to have deposited, played or withdrawn at any site, and ratings on this page are editorial judgments rather than customer review scores. Offers were last checked on Sep 25, 2026. Terms move, and we would rather hear about an error from a reader than leave it standing. Email the page, the claim and what you believe is correct, and we will verify it against the source and update or remove it. If you tell us where we got it wrong, we will say so on the page.

Prefer to browse before writing? Start with the offer you are weighing up, read its conditions in full, then send us the specific clause that does not make sense. That gets you a useful answer far faster than a general question.