Yep! I owe RPGs a lot, really, for their influence on my life. RPGs are what got me into acting, which is what got me into directing/writing, which is what got me into wanting to do comics. It's all sort of tied together for me. : )
My comic, Atonement, is the spiritual sequel to a large-scale original sci-fi campaign RPG of the same name that I created and ran for a large number of players over the course of three years. It was basically like a game of D&D, except it ran 24 hours a day every day, and had anywhere from 10-60 people playing it at any given time. It was just one on-going story, probably the craziest and most intense thing I've ever done.
One of my other comics, I, Necromancer is sort of like Breaking Bad meets Dungeons and Dragons.
I'm also currently running a homebrewed 5th edition Dungeons and Dragons campaign that I'm hoping to publish as a campaign setting through Wizard's DMsGuild platform.
And I do really get down on some awesome western RPGs/video games, particularly stuff created like Baldur's Gate, the Witcher series, Mass Effect and Dragon Age, etc. Choice/narrative-driven RPGs.