Keno is one of the most popular gambling games in Vietnam, and it can be found in both land-based and online casinos. The game is played using a board of 80 numbers, from which players choose up to 20 numbers and mark them on their card. The goal of the game is to correctly guess which numbers will be drawn by the casino.
Keno is a game of chance, and the player's odds of winning depend on the number of numbers chosen, the number of matches made, and the amount wagered. In Vietnam, the most popular form of Keno is the "Binh Dai" variant, where the player can choose up to 10 numbers and the house edge is lower than in other versions of the game.