Cards, roulette wheels, and slot reels hold more than game-night memories. This...

https://varimail.com/articles/why-reels-became-the-default-way-to-show-slot-outcomes/

Cards, roulette wheels, and slot reels hold more than game-night memories. This article traces how casino history survives in their design, from single-zero versus double-zero wheels to the machines that shaped public play.