Two of the four new entrants to the list of the UK's 10 richest Asian businessmen run an online gambling operation based in Gibraltar.
Partygaming's online gambling has attracted increasing players
Anurag Dikshit, 34, took third place in the table with an estimated wealth of £1.7bn - thanks to British dependency being included in the list.
Partygaming's Vikrant Bhargava ranked seventh, with a net worth of £592m.
Steel magnate Lakshmi Mittal, worth £14.8bn, remains the richest UK Asian.
Other new entrants in the top ten were Naresh Goyal of Jet Airways, and Felix Grovit, founder of foreign exchange firm Chequepoint.
The new list - published by the Sunrise Group - was compiled by Dr Phillip Beresford who developed The Sunday Times rich list.
The combined wealth of the 300 Asian multimillionaires on the list has surged from £24.9bn in 2005 to £35.5bn in 2006, an increase of 42.6%.
Unlike the British rich list, where two-thirds have inherited their wealth, on the Asian list this figure is only 3%.
The accomplishment of the two Partygaming entrepreneurs is typical of many of the names on the list, who moved abroad at an early stage to make the most of their business know-how.
ASIAN RICH LIST TOP 10
Lakshmi Mittal - LNM Group - £14.8bn
GP &SP Hinduja - Sangam Group - £3.6bn
Anurag Dikshit - Partygaming - £1.7bn
Anil Aggarwal - Vedanta Resources - £1.68bn
The Jatania Brothers - Lornamead - £850m
Naresh Goyal & Family - Jet Airways - £780m
Vikrant Bhargava - Partygaming - £592m
Felix Grovit - Chequepoint - £465m
Lord Paul & Family - The Caparo Group - £465m
Gulu Lalvani - Binatone - £450m
Mr Dikshit graduated of the Indian Institute of Technology (IIT) in 1994, then moved to work for a US software developer a year later.
In 1998 entrepreneur Ruth Parasol took on the 25-year-old Mr Dikshit and asked him to create casino games such as roulette. They launched Partygaming in 2001.
When the company floated last year, Mr Dikshit became a billionaire overnight.
He himself recruited his friend and fellow IIT graduate Mr Bhargava to the company to run its Caribbean operations which focus on the US market.
Elsewhere in the league table, the Hinduja brothers - Srichand and Gopichand - held onto the number two slot with a combined wealth of £3.6bn for their global finance, telecommunications, film and oil businesses.
Only 22 of the richest 300 Asians were women, of which one was Meena Pathak, of the Pathak spices group.
The most important sectors were wholesaling and industry, which had 45 individuals each.
Over half (187) of those who have made the list are from London and the Southeast.