Trấn Yêu Lục is a free online card game, where you can play against other players from all over the world. It is a multiplayer card game that allows you to play with up to four people in the same room. Each player is assigned a card from the standard deck, which they can use to attack and defend their opponent. The attack and defense are handled in a manner similar to a traditional combat game. However, the primary difference is that the players in this game do not take their hands off the card, but they simply flick it onto the screen, where it will then be placed in front of their opponent. This allows the players to make use of their hands to play the game, rather than simply holding the card and moving it across the screen.