I look in the TV/Movie/Game Tie-in section in Waterstones, (which is a British book retailer) and I see some stellar tie in novels, Icarus Effect (Deus Ex) Warhammer (At least 20 novels O_O) and Halo (A good 5 or so)
As far as I'm aware, these books really expand the lore of the series, to great effect.
So why doesn't TES or Fallout Have them? Heck, even Beth' Published games such as dishonored would thrive on other media. The only two legitimate reasons I can see is that it might break the lore of the games. Which in the case of Fallout, is hard to do. The world is a big place, following the adventures of a Man in post-war America can't be too hard?
Or Possibly that having a character made for them might ruin the RPG aspect. But it's a book, it could just focus on the lore, it's no matter. It's not like the games are unpopular. NV sold 5 Million copies, and Skyrim shifted an estimate of 10 Million+ as of July 2012, still shipping more today.
I'm no lore-nerd, but TES and fallout (Especially fallout) have worlds untouched, and stories untold, it seems a shame all this is going to waste :/
Pacman is a deadbeat uncle who embarrasses everyone involved while living off of his one single moment of glory he had back in the 80s -Tirkaro 2013
This. I love the games, but their lore is so plain and generic... it's a good thing in the sense that I don't care about installing some awesome lore-breaking mods in Skyrim as much as I do in New Vegas.