Big Time Gaming (BTG) Slots UK 2026

Big Time Gaming invented the Megaways mechanic in 2016 and built one of the most important slot catalogues in history from it. A small studio (by industry standards) with a curated output: Bonanza Megaways, Extra Chilli Megaways, White Rabbit Megaways, Millionaire Megaways. Every BTG original uses the unlimited win multiplier mechanic in free spins. White Rabbit holds the highest RTP of any Megaways slot at 97.39%.

Big Time Gaming — The Studio That Changed UK Slots

BTG's Megaways engine licenses to 30+ other providers, but the originals remain distinct. The difference: BTG Megaways titles use the unlimited win multiplier that increases by 1x with every cascade during free spins, with no ceiling. This mechanic — deceptively simple — creates the potential for extraordinary free spins sessions when cascade chains align with growing multipliers.

Core BTG catalogue: Bonanza Megaways (96%, 50,000x — the original Megaways slot, 2016), Extra Chilli Megaways (96.20%, 10,000x — adds the gamble feature for free spins count), White Rabbit Megaways (97.39%, 10,000x — highest RTP Megaways slot, 248,832 ways max), Millionaire Megaways (96.25%, 50,000x — features a 12-symbol high pay tier).

Extra Chilli's gamble feature is unique: before free spins begin, you can gamble the number of spins for more — clicking the chilli to risk your 10 spins for a chance at 20, 40, or unlimited. This risk-reward mechanic (unique to BTG) lets players control their variance exposure in a way no other Megaways game offers.

BTG titles are available at 10Bet (which has strong BTG coverage), Casumo, Casushi, and Ladbrokes. White Rabbit and Bonanza are the most widely distributed.