A consortium including China’s Giant Interactive Group, backed by billionaire Shi Yuzhu, is in talks to acquire Caesars Entertainment Corp.’s online game unit for more than $4 billion, Bloomberg News reported yesterday. The Giant-led group has emerged as the leading contender for the business after an auction process. Caesars Interactive is one of the largest players in the market for casino-style games on Facebook, with titles such as Slotomania and Bingo Blitz. The business is projected to generate earnings before interest, taxes, depreciation and amortization of more than $360 million this year. That’s an increase of at least 27 percent from the $282.7 million ebitda reported for last year, according to a filing.