My experience:

You said, "Dude - You have the coolest office ever."

I think this was my exact mental process as you walked by:

"
Ok - These guys are leaving now. I'm waving goodbye to them. I know some of these guys have been waiting for Duke Nukem Forever as long as I have. I hope they feel good about their experience. I hope they appreciate everything about what Allen and the guys have done that I do. I hope they had a great time.

One of them is looking at my office. He's checking it out. He thinks it's cool, I think! Or he thinks I'm a tremendous nerd.

He complimented my consoles! Sweet!

I am proud of my office and every day I look out over every one of my consoles from childhood to present, I am reminded of all of the awesome game experiences I've had on all of them. I am glad that you appreciate such things too and I imagine we could talk for hours about video games new and old. But this guy is complimenting me and I'm terrible at taking compliments and I don't know exactly how to respond to it. I'm starting to feel a bit sheepish and awkward and I'm probably giving off that vibe and it's going to make him uncomfortable... What did my mom tell me to do when someone compliments you? Oh yeah, say, 'thank you!'. She told me to graciously accept compliments with plain, polite acknowledgment. Ok - I know what to do... Wait - He's walking off to elevator being ushered away by Steve. Get on with accepting the compliment before gets away!
"

I said, "Thank you. [uncomfortable, subtle laugh...]"