A player may win by having any final score equal to or less than 21 if the dealer busts. Super Fun 21 is an online blackjack variant at Microgaming online casinos, which offers a slightly lower average return.us casino regulations 20BEST CASINOS Blackjack has always been a casino favorite so we thought we’d put together a collection of our best Blackjack strategy articles right here for anyone who wants to learn the game and have a better. Find blackjack articles and other information related to blackjack here in our blackjack articles section on Casino Advisor. Blackjack, also known as twenty-one, is the most widely played casino banking game in the world. Blackjack is a comparing card game between a player and dealer, meaning players compete against the dealer but not against other players. It is played with one or more decks of 52 cards.