About 21 Casino
UK‑friendly online casino with a clean lobby, mainstream payments and a familiar slate of top studios. Quick to pick up, easy to get around.
Pros & Cons
What we like
- UK licence & RG tools
- Mobile-first lobby
- Mainstream payments
Watch out for
- Bonus T&Cs can be strict
- Limits/caps may apply
Games & Software Providers
Game types
Top providers
+ 126 more providers
Deposits & Withdrawals
Welcome Offer & Bonuses
Standard UK casino welcome: a matched first deposit plus a spins bundle on selected slots. Wagering, max‑bet caps and payment‑method exclusions apply (debit‑card/PayPal only). See Promotions (18+, BeGambleAware.org, T&Cs).
Wagering requirements
Standard UK casino terms: ≈35x bonus wagering; free‑spins winnings carry wagering; max‑bet & weighting apply.
- Eligible deposit methods limited to UK debit and sometimes PayPal, free‑spins winnings carry wagering, Max bet while wagering and game weighting restrictions apply, Selected slots only for spins, jackpot games excluded from wagering, Bonus/spins expiry windows, one welcome per player, KYC required
Reputation & Complaints
23 total complaints tracked across review platforms.
Our Verdict
Solid if you stick to the rules and play responsibly.
Reviewed by Casimo Editorial · Edited by UK Gambling Editor · Updated 2025-08-29
Player Reviews
“A proper classy site, feels a bit more upmarket. Was having a go on good old Gonzo. The avalanche multipliers just kept climbing. Got up to the 5x a few times in the base game. Smooth as silk.”
“Love the chaos of this game! Hit the Gargantoon feature twice in one session. The little aliens were popping all over the shop. 21 Casino is a solid White Hat site, never had an issue with them.”
“Better than Book of Dead, I reckon. Got the bonus and it retriggered three times, had four expanding symbols by the end. The screen was covered in Kings! Walked away with a very tidy sum.”
“The bazooka feature is what you want! Blasted the screen and filled it with fish. It's a simple game but it can properly go off. 21 Casino has all the Pragmatic stuff, so I'm happy.”
“The Megaways version is mental. The cascading wins and the massive multipliers in the bonus... pure class. Started with £20 and cashed out over £250. Get in!”
Frequently Asked Questions
Is this brand UK-licensed?+
Check the licences on this page.
What payments are supported?+
See the cashier list above.
Any drawbacks?+
Withdrawal caps and strict bonus terms are common.