THOUSANDS of lottery lovers could soon be playing a new version of the Mark Six. Royal Hong Kong Jockey Club officials who run the weekly lucky numbers draw are considering an extra series of numbers at the bottom of each ticket. Mark Six entrants could then choose to pay a small extra fee, perhaps $2, to activate the numbers for a second draw which would take place at the same time as the Mark Six. It is a system widely used by lotteries in Europe and the United States, many of which are in town this week for a huge lottery industry jamboree at the Convention and Exhibition Centre. Jockey Club Director of information technology, Warren Wilson, said: ''The Mark Six is as technologically advanced as any of the other operators. But some lotteries have a 'bonus ticket', and that might be something we may want to do one day.'' The idea was received cautiously by the Government. Principal Assistant Secretary (Treasury) in the Finance Branch, Max Todd, said: ''We would look at whatever the Lotteries Board suggests, which is not to say that we would support it.'' Meanwhile, someone in Hong Kong could be holding a ticket worth $38 million. Organisers expect the Mark Six Snowball draw at 6.47 pm this evening to pay out at least $45 million, including a 'Mid-Autumn Festival' bonus of $30 million. If one person draws the jackpot it would be the second largest payout in the history of the Mark Six, and a huge fillip to this week's lottery exhibition. The Intertoto Congress is being held in Asia for the first time, and it has attracted more than 900 delegates from 53 countries, with some from as far away as Burkina Faso and Kazakhstan. Three mainland Chinese delegations are also taking part, including one from Guangdong. The Chinese presence has attracted some of the biggest ticket and gaming machine manufacturers in the world, eager to cut deals. Jim Walters, President of Californian firm International Totalizator Systems Inc, has just delivered 1,000 ticket machines to the Manchurian province of Jilin. ''Eventually the China market is going to grow but it may be a little slower in coming than some people think,'' Mr Walters said.