Obviously I'm aware that you're not supposed to distribute code or even copy the gameplay from another game, but does anybody know if it's legal to put a screenshot of an old game inside your game? I don't suppose the age of the game matters unless they've released the rights to the game. So would you, for example, be able to put a screenshot of Call of Duty in your game, talk about Call of Duty etc etc? So long as you're not actually putting their gameplay or copying their gameplay, is it ok?
I'm thinking it's probably not, but on the other hand, reviews for example have dozens of screenshots and I'm fairly sure it's legal to take your own screenshots of a game and then post it on the internet.
I suppose in the same way, is it legal to put something like a poster in your game? Could you stick a big Star Wars poster on a building wall in your game?