With the penultimate season of Game of Thrones finished on TV and a colossal amount of people talking about it, it's hard to imagine any video game maker ever passing up the opportunity to get a piece of that franchise pie. But as I found out recently, Obsidian Entertainment did - it turned down Game of Thrones.
It's not just kids who rack up thousands of pounds playing mobile games. Adults do it, too.
Game of Thrones Ascent has launched on iPad - just in time for the beginning of season four of the TV show on 6th April.
There's a PC, PS3 and Xbox 360 RPG in the works. And a massively multiplayer online game. Now, A Game of Thrones' plot has thickened with news of a Facebook game based on the gritty fantasy universe.