While there are of course many great online casinos in which players from the US can get their fill of the online slots action, some are of course more popular than others. The most popular US online casinos, those listed right here, will all provide a massive slots selection, but on top of that they’ll provide you with so much more...we guess that’s what makes them so popular. Combining great slots selections with masses of fantastic slots bonuses is what the most popular US casinos online do, and each of the well designed casinos below will provide you with that, as well as multiple ways to play, that include a free casino download, a great instant play casino option, as well as a mobile casino. The best US casinos will also provide a constant stream of new slots and casino features and when all of that is mixed up nicely together it creates a great online casino, one that US slots players will enjoy.