Online slots evolved from simple three-reel games into a wide variety of...

https://thefiguremagazine.com/classic-reels-to-megaways-how-online-slots-became-more-varied/

Online slots evolved from simple three-reel games into a wide variety of options. You’ll find classic reels, themed video slots, and innovative features like Megaways and Slingo. Many offer bonus rounds and jackpots to increase excitement