Players can place their initial bet with this bonus, giving punters a warm welcome to the DragonBet site. You must make a qualifying bet of minimum odds within 14 days of registration to. This may be automatically entered for you on the registration form but if not. Only 18+ new users registered using the “MB20” bonus code are eligible. The sign-up bonus essentially allows you to. Wager £+ on selected slots and get 50 FREE SPINS, every week! Play Now. I am describing this side bet because I have an unusual story to tell. The Dragonbet promo code to claim the free bet welcome offer is 'bet15get10'. . dragon bet allows the casino to get twice as much money wagered on the table bonus. As a new player, you are welcomed with a generous offer designed to give you a head start in your betting journey. Our extensive guide to the best free bets and betting offers for February includes details of more than £ in free bets and bonuses. Terms and Conditions Apply. Although there is no long-term welcome bonus, Dragon Bet has offered free bets to new customers in the past and may do so again in the future. Although this is most often a deposit free bet, it is.