I am not a gamer. I never really considered myself to be one in the past either, although I did play games when I was younger. Hence, my opinion might not be valuable and up-to-date, but I hate the direction that gaming has taken. I mean the in-game purchases and necessity to spend money over and over again in order to proceed with the story. I am of the opinion that you should buy for the game once before you can play it. It then becomes yours forever and you won't have to spend more money on it.

I see no reason why you couldn't add bitcoin as a payment method to a list of all other accepted payment options. If you are planning to add it as an in-game purchase option, it's a crappy way to go just like with the other in-game purchase methods.