One card down: wars use a single face-down card instead of three — noticeably shorter.; Three or four players: deal the deck evenly; a war involves only the tied players.; Casino War: the house version, played against a dealer with a bet and a surrender option on ties.
Why people argue about this
People often assume that in Casino War, all players bet against each other like a traditional war game, which is incorrect. Actually, Casino War pits each player individually against the dealer, with the option to surrender if they don't want to continue betting on their tied hands. This rule structure can lead to misunderstandings about how the game progresses and who makes decisions within it.