Mau Mau Online is a free card game, where the goal is to be the first player out of all the cards. The way to be first is by getting as many points as possible. There are different ways to get points, and depending on the number of players and the game mode, you can get points from the cards in your hand, or from the cards in the game, or from the cards in the other players' hands. If you are the first player out of the cards, then you will get a high score and you will be on the board of honor.

Mau Mau Online has a multiplayer mode, where you can play with one or more people. You can play against the other player, or you can play with your friends. You can invite your friends to play with you, or you can play with your friends on a private server.

There are several seasons in Mau Mau Online. Each season has a different look and feel. There are also achievements and trophies to be earned in the game.