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

https://source-wiki.win/index.php/Best_Way_to_Tell_If_a_Slot_UI_Is_Readable_on_a_Phone

Modern online slots borrow heavily from mobile and console game design to boost engagement. Take NetEnt’s Starburst, for example, which uses vibrant visuals and smooth touch controls optimized for iOS and Android in portrait mode