Novomatic president Johann Graf is among the list of billionaires which has just been issued by the American Forbes business magazines.

Novomatic president Johann Graf

Graf, 67 (pictured), is listed at number 204 with a "net worth" of $6.8bn. But he is by no means the wealthiest.

The ninth richest man in the world is gambling titan Sheldon Adelson with a fortune of $37.3bn.

Behind him comes Hong Kong’s Lui Che Woo at number 31, with $20.6bn from casinos. Pansy Ho also from Hong Kong, comes in at number 218 with $6.3bn, again from casinos. The pachinko business is represented at number 308 by Kunio Basujima with $4.9bn from Japan.

Other well known names are Steve Wynn at 428 with $3.7bn, Lawrence Ho with $2.6bn, Elaine Wynn with $2.6bn and Playtech’s Teddy Sagi with $2.3bn.

Well known in the Spanish gaming machine business is Manuel Lao, who is at number 864 with $2.1bn and Australia’s Lennie Ainsworth is at position 1241 with $1.4bn.