If you know anything about Mancala, you probably know that it's one of the oldest board games in the world. Mancala is a basic played all around the world in many different cultures. It actually is a family of games, all sharing a basic set of rules.
Kalah
In all kinds of mancala, you have a board with an even number of holes in it that are arranged in two rows. Each of these holes has small beads or marbles inside which the player picks up. You keep putting one bead in each hole around the board. People tend to call the most common variant of this Kalah. This is the mancala game that's the most popular with people in the US.
Bohenspiel
Bohenspiel is one of the earliest variants of mancala. The word "bohenspiel" means "bean game," and it is from Germany. In bohenspiel, you want to bring the total number of seeds in a hole to two, four or six.
Eson Xorgal
If you want to hear about a really interesting mancala game, think about Eson Xorgal from western Mongolia. In this game, there are 10 holes (known here as cups) rather than Kalah's twelve. It's also traditionally played with goat droppings- not your average board game!
Oware

Oware, from Ghana, is also a really interesting mancala variant. Instead of only having two rows of six holes, Oware has four rows of eight holes for even more fun!
AyoAyo
AyoAyo is a variant that originates in Western Nigeria. In it, the player captures pieces from the opposite cell from where they finish rather than the one they end in.