Brag dates from 16th century England and is another one of these “vying” games that often are described as forerunners to poker. In fact the name of the game -- “brag” -- can literally mean to “vie” (or to compete) in some contexts. It also can mean “bluff,” and bluffing is indeed part of the game.
The game is still fairly popular today, although it has undergone a lot of changes. Originally a game involving three-card hands (sometimes called “three-card brag”), there are versions with four, five, six, seven, nine, and even 13 cards. Brag was big enough for Edmond Hoyle to write about it in the mid-18th century, although by then he was describing a game that was a bit different from the earlier version I’m summarizing here.