Bao (Swahili for: "board") is a mancala game widely played in Eastern Africa. The Yao in Malawi changed its original name to Bawo. In Malawi it is said that it was first played along the shore of the Lake Malawi.
The game was first described to Europeans by the French traveller Flacourt in 1658 who saw it on Madagascar. Thomas Hyde found it 1658 on Anjouan, Comores. The oldest still surviving Bao board was made in 1896 in Malawi and is kept today in the British Museum in London.
Some call Bao/Bawo the "king of mancala games", as it is usually considered the most difficult and complex of them.
More information can be found on the following websites:
www.wikimanqala.org
Wikipedia on Bao/Bawo
Wikipedia on Macala games
German Wikipedia on Mancala
Gamesmuseum on Mancala
Gamesmuseum on Rhodesia
Ubao la kiswahili on Bao
Mind Sports World on Mancala and Bao/Bawo
The Free Library on Bawo
Philipp Greenspun on Isolo, the Sukuma Royal Game