Slot machines used to take up entire casino floors with cabinets over 50 feet...

https://www.rankbookmarkings.win/slot-machines-used-to-be-these-massive-50-foot-tall-setups-on-casino-floors

Slot machines used to take up entire casino floors with cabinets over 50 feet tall. Now you can play the same games on screens as small as 6 inches—right on your phone