In marketing I've seen only one strategy that can't miss - and that is to market to your best customers first, your best prospects second and the rest of the world last.

The thought processes that go through my head when I'm playing a game compared to the thought processes in real life are very, very different. And they're more interesting to me than what you think about when you're doing the dishes, cleaning the yard, watching TV, driving or watching a movie.

What I didn't foresee in 2005 was the rise of the post-PC, which are all these tablets now. These are the things that actually will probably be the end of the consoles.

I think DOOM had just the right mix of elements that keep people coming back to it: great monsters, excellent weapons with great balance, a spooky environment and extreme speed.

Doom 2 is just such a bigger, badder, better version of Doom

I still like to play games that have a beginning, an end and a story.

We are at the point where game designers have become celebrities due to the size of the market they serve.