Modern online slots borrow heavily from mobile and console game design to boost...

https://www.citywatchla.com/gaming/33360-why-online-slot-games-look-more-like-mainstream-video-games-than-ever

Modern online slots borrow heavily from mobile and console game design to boost player engagement. Take NetEnt’s Starburst, for example. Its vibrant visuals and smooth animations translate perfectly to portrait mode on iOS and Android devices