Game of Thrones may be all serious and gore-filled when it's polished up and ready to air, but during the making of, well, there's some fun to be had. 

There's singing, there's falling over, forgetting lines and even swearing while sitting on the Iron Throne. 

Yep, the cameras don't just roll when you're getting it spot on. 

The bloopers reel, taken from series 4 filming, was shown at this year's Comic-Con in San Diego. Author George RR Martin also lightened the mood of the panel, after talk inevitably turned to death, joking, "The key for the actors is to never ask for a raise".