Macau's casino industry, which surpassed the Las Vegas Strip in gaming revenue in 2006, should lure more mass-market tourists instead of relying on high rollers from China, analysts and industry officials said. The former Portuguese colony, the only place in China where casinos are legal, is in a "perilous situation" because companies are chasing "growth that cannot be sustained," Norman MacKillop, the Macau head of gaming industry investigator Spectrum OSO Asia, said in an interview.