The pilot for Game of Thrones reportedly cost HBO over US $ 4 million .
The pilot episode , `` Winter Is Coming '' , was first shot in 2009 ; after a poor reception in a private viewing , HBO demanded an extensive re-shoot ( about 90 percent of the episode , with cast and directorial changes ) .The pilot reportedly cost HBO US $ 5–10 million to produce , while the first season 's budget was estimated at $ 50–60 million .
Game of Thrones