The three-reel, three-row arrangement with cherries and lemon symbols was the industry standard for decades. If a device did not have such a grid structure, it was not considered a slot. At least, it was the layperson's perspective, since that's what they'd become used to seeing on casino floors and what met their description of a slot machine. This genre, of course, changed through time. Electronic and video reel spinners first appeared in the 1980s, while online slots first appeared in the mid-1990s. Megaways and purchase bonus slots are becoming the most popular online games, as more and more players want a stronger feeling of engagement. Retro games, on the other hand, are still popular with slot fans and those who play Caribbean Stud Poker because they inspire a feeling of nostalgia and have a charm that newer releases lack.