Play Blackjack Super 21 Online at Mansion Casino UK


This promotion is for new customers only. Customers must be 18+. Customers must be residents of the UK/IE.


New customers only aged 18+. Minimum deposit £10. Get a Casino Bonus matched to your first deposit, up to £100, after you stake £20 on slots, credited within 48 hours. Bonus expires in 7 days and has a 40x wagering requirement. Additional T&Cs apply. Please bet responsibly.


New customers & 18+ only. Min. deposit of £10. Qualifying real money bet of £10. Min odds greater than or equal to 1.5 required. E/W bets excluded. Offer credited within 48 hours. Additional T&Cs apply. Please gamble responsibly.


#AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18, Please Gamble responsible.

Whether you’re a new or experienced online card games player, looking for free games or real money payouts, our Blackjack 21 online games at Mansion Casino UK offer a state of the art experience, fast paced action and plenty of ways to win. Enjoy an atmospheric backdrop and a range of possible payouts as you play this thrilling version of a casino classic. Played heads-up against the dealer, based on traditional online Blackjack game rules, a few additional features and twists create one of the best Blackjack internet casino experiences around from the comfort of your own home. And with games available around the clock every day of the year, you need never miss out on your favourite form of casino games online entertainment. Open a Mansion Casino UK account today to play our real money online casino games such as Blackjack 21, and you can claim your exclusive online casino Welcome Bonus up to £200: this means up to £200 in extra bankroll to use on your favourite games!

How to Play Blackjack Super 21

Start by selecting Blackjack Super 21 from the list of online Blackjack games we have on offer at Mansion Casino UK. Your aim is to beat the dealer with a hand of 21 points, or as close to 21 as you can get without going bust. When you are taken to your table, choose your chip value and place your bets on the table - every left click increases your bet by one chip at a time and every right click removes one chip. The New Game button will start a new round of Blackjack Super 21, and you can also click Rebet to repeat your previous bet and save time. Based on a standard Blackjack game, there are some extra rules to watch out for; for instance, you cannot opt to Double after Splitting, and when you Split Aces, only one more card can be drawn. In addition, there is an automatic win for a hand made up of six cards or more (a Six Card Charlie) that isn’t bust, or a hand of five or more cards that total 21 (a five card Charlie). In Blackjack Super 21, a player’s Blackjack hand always beats the dealer’s Blackjack hand, and you can Split hands up to four times and you can Double after a Split.

Blackjack Super 21 Winnings

The payouts in Blackjack Super 21 are different when compared to other online Blackjack games. If you get a Blackjack hand, you will receive a payout of even money, unless you have a hand known as a ‘diamond Blackjack’ – in this instance, you will receive a payout of 2:1. In addition, if you Split your cards and get a hand consisting of an Ace and a ten or face card, this is not considered a Blackjack but a hand of 21. A five-card hand and six-card hand pay out at 2:1 if you haven’t doubled.