All new players can receive an attractive package of Free Spins bonus to start their Big Thunder Slots journey. 1st, 2nd and 3rd ever deposit: win a Matchup Bonus. R. Category: Free Spins For Existing. The casino will also offer one free spin on. Big Thunder Slots Welcome Bonus. . 1st, 2nd and 3rd ever deposit: win a Matchup Bonus up to 10X your deposit amount (£2, max bonus),£10 min fund for all 3 offers, max bonus conversion equal. Get Your Big Thunder Slots Casino Bonus* *Up to £ Bonus Package: New Players only. Up to £ + Free Spins. 1st, 2nd and 3rd ever deposit: win a Matchup Bonus up to 10X your deposit amount (£2, max bonus), £10 min fund for all 3 offers. 1st, 2nd and 3rd ever deposit: spin multiplier wheel and win a. New Players only. Big Thunder Slots Casino: % up to £, 1st Deposit Bonus · Type Welcome Bonus · Bonus Value £ · Minimum Deposit £10 · W. Start your Big Thunder Slots adventure by spinning the Bonus Wheel 3 times today and claim your welcome bonus worth up to £6,, read more for full T&Cs. 65x(d+b) · Cashable Yes. Up to £ Visit Casino. Big Thunder Slots Casino: Up to £ Welcome Package on Multiplier Wheel New Players only. #Ad, 18+, BeGambleAware | New Players only. 1st, 2nd and 3rd ever deposit: win a Matchup Bonus up to 10X your. Join us for Happy Hours at Big Thunder Slots every Wednesday between pm and you can win 10 free spins, no deposit required! All Available & New Big Thunder Slots Casino Bonuses ; Big Thunder Slots Casino.