Big Daddy Subject Sigma journey's into Rapture Central Computing to retrieve the Thinker, a hyper-intelligent supercomputer, and bring it to the surface while simultaneously discovering his ... Read allBig Daddy Subject Sigma journey's into Rapture Central Computing to retrieve the Thinker, a hyper-intelligent supercomputer, and bring it to the surface while simultaneously discovering his missing past.Big Daddy Subject Sigma journey's into Rapture Central Computing to retrieve the Thinker, a hyper-intelligent supercomputer, and bring it to the surface while simultaneously discovering his missing past.