I think most of my series would make great settings for video games:
-Long, meandering plots that can easily translate to several hours of play and sidequests 
-Lots of fun characters and dialogue interactions 
-Unique environments 
-Dynamic MCs with interesting abilities 
I think one of the biggest challenges a game director has to face is generating content. You need a general directive, yes, and then you need the gameplay itself to function well, but after that it's just coming up with additional * things * to engage and entertain the player.
And I am great at coming up with * things *. ^^ In general I have way more * things * than I have story for any given project...if someone were to come to me right now and say 'let's turn [insert comic] into a video game, what material do you have?' I could say 'here's the 30-page script...AND, here's 90 pages of extra material with notes on how the world works, and little snatches of dialogue that I liked a lot but didn't make the final draft, and if you'll give me a few hours I can gather up all the concept art!'