The ceremony, which gave out technical achievement prizes, came just eight days before the main Emmy awards show.
“Game of Thrones,” which has achieved cult series status, collected eight prizes in categories including special visual effects, casting and sound editing.
The fantasy saga has the most nominations going into the September 20 main Emmys ceremony, with 24 in total.
“American Horror Show: Freak Show,” starring Jessica Lange, followed next in Saturday’s awards with five prizes.
Alex Gibney’s “Going Clear” documentary and “The Jinx: The Life and Deaths of Robert Durst,” about the reclusive real estate figure suspected of murder, also fared well.