Online slots have grown from simple classic reels to a wide variety of options,...

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

Online slots have grown from simple classic reels to a wide variety of options, including themed video slots, dynamic bonus rounds, Megaways with thousands of ways to win, jackpots, and Slingo hybrids combining slots and bingo