I was catching up with GOT today. It is only really this show and The Walking Dead that I really look forward to at the moment. So finding a moment when I can watch it without interruptions is a good thing.
Watching shows like this (and Vikings, The Last Kingdom and similar shows like Rome have similar vibes) always make me think what they would be like as an RPG. I have seen plenty of figure conversions on sites like Lead Adventure Forums for GOT minis. Possibly there is also a viable kickstarter out there with some more specific figures for a tabletop wargame. There has been a tabletop RPG out there for a while as well. Basically there is no shortage of inspiration.
To be honest I doubt I would run it as a tabletop game. There is far too much to remember and players being people are bound to trip me up. However it did start me down the road of RPGs and the statecraft element. These, and other systems, had a big effect on the idea of spectacle that plays a central role in my games.
The biggests game I have set in motion, in recent years at least, such as Fallout and Vikings, both featured mass battle system. For the Viking game I have even done a Savage Worlds mass combat system. Yes I know they have a skirmish game called showdown but it doesn't give the almost wargame feel that I wanted which still allows the players and heroic NPCs to have an effect on the outcome.
Whilst I know these are combat systems, the real pleasure in such a system is how it creates a story and builds a background. If you look back in dark age history the most notable events are the battles. This is despite the being fairly limited records of what went on. Now I am not talking in terms of the Anglo-Saxon Chronicles but having a history of the game alongside a mythology always helps the players to buy into a game.
Most players like a scrap. There are not many RPG games out there that are combat light. Skirmish battles are fine but if the players want to make it into a games legends, they have to claim their glory in the biggest battles.