(Bloomberg) -- Tencent Holdings Ltd. and Ubisoft Entertainment SA’s founding Guillemot family are considering options including a potential buyout of the French video game developer after it lost more than half its market value this year, according to people familiar with the matter. Most Read from BloombergUrban Heat Stress Is Another Disparity in the World’s Most Unequal NationFrom Cleveland to Chicago, NFL Teams Dream of Domed StadiumsSingapore Ends 181 Years of Horse Racing to Make Way for H