Twin Merge

A six-reel half-symbol slot in a neon arcade. Reels work in pairs: the left reel shows only left halves, the right only right halves, and matching halves in the same row merge into a whole symbol. Twin-mask wilds merge with any half, while an × half plus a number half forms a multiplier for every merge that spin. Black glass, magenta and cyan neon, and a glowing seam on every merge.