Mancala Rules: How to Play Kalah, Oware and Congkak

Kalah (the most common Mancala)

Board: 6 bowls on each side and a big store at each end. Your store is on your right. Each bowl starts with 4 seeds (3 to 6 in other setups).
Sow: pick a bowl on your side, take all its seeds and drop one in each bowl going counter-clockwise, including your own store but never your opponent's.
Go again: if your last seed lands in your store, take another turn.
Capture: if your last seed lands in an empty bowl on your side and the bowl opposite has seeds, both go into your store.
The end: when either row is empty, each player puts the seeds left on their side into their own store. Most seeds wins.

6 bowls a side, 4 seeds each. The stores only hold what you capture.
If your last seed makes a bowl on your opponent's side hold 2 or 3, you capture it, plus the bowls just before it that also hold 2 or 3.
A move that would take every seed your opponent has captures nothing (grand slam rule).
If your opponent has no seeds, you must give them some if you can.
First to 25 seeds wins.

7 bowls a side and 7 seeds in each. Both players start together, sowing at the same time.
If your last seed lands in a bowl on your side that already had seeds, scoop them up and keep sowing.
Last seed in your store means go again (up to two times in a row in our game).
Last seed in an empty bowl on your side captures it and the bowl opposite.

In Kalah, look for bowls whose seeds end exactly in your store. Chaining extra turns wins games.
Keep an eye on empty bowls on your side: they are capture traps for your opponent's seeds.
Don't leave a big bowl opposite one of your opponent's empty bowls.