My pitch for a Sly Cooper/Infamous crossover is to do a "What If" scenario. I'd avoid the whole crossing universe aspect and have them already exist there. Sly's a human thief or Cole is a wolf bike messenger etc.
It's a potential jump the shark moment but I thought it was a way to go big or go home.
It's a potential jump the shark moment but I thought it was a way to go big or go home.