In detail
BTG launched Megaways in 2016 with Bonanza Megaways. The mechanic uses a variable-reel structure (typically 2-7 symbols per reel across six reels) plus a horizontal scatter reel. Wins pay on adjacent matching symbols left to right. BTG licenses Megaways to most major studios who add their own themes and bonus features. Megaways slots are typically high-variance with cascading reels.