Melco International Development will boost its slot machines business through a loyalty programme and higher than average payout ratio to strengthen its leadership in the Macau market. Melco, whose core business is gambling and leisure, operated 700 slot machines in Macau and achieved 40 per cent market share by revenue and 25 per cent market share in terms of the number of machines, managing director Lawrence Ho said. The slot machines business generated $63 million revenue in the first six months of this year and earnings before interest, tax, amortisation and depreciation was $32 million, the company revealed in its interim results announcement. The company invested in a loyalty programme to attract more frequent visitors, now numbering about 20,000. Melco's first-half turnover was up 19 per cent to $250.72 million over the same period last year. Net profit, including a one-time gain on disposal of assets of $511 million, surged 770 per cent to $534.16 million. Earnings per share were 54.66 cents and interim dividend per share was one cent.