The artist and writer said that he was working on the top secret game, alongside a sequel to his explicit 1988 comic Black Kiss and a creator-owned Icon title with Matt Fraction (Avengers vs. X-Men).
"Right now, as we speak, I am writing a video game which we cannot discuss as although I'm very excited about it as I've signed an NDA," Chaykin told Comics Anonymous.
"I'm about to start the artwork for the sequel to Black Kiss - a genuinely disgusting comic book that I did when I was in my late thirties when I was genuinely disgusting - and now that I'm post-disgusting, I have decided to re-explore the concept of what it would be like at my age to dabble in my own disgust.
"I'm waiting to get the schedule going on an Icon book with Matt Fraction which I'm really looking forward to, and this also has its elements and measures in showbusiness," he continued.
"I like working with Matt. We've never done a creator-owned property together, but we've done 'work for hire' work and so this is an opportunity for us to do something where we both participate.
"Matt and I are brothers, twin sons from different mothers, even though I'm old enough to be his father. We share similar sensibilities."
The Black Kiss sequel will be published by Image Comics.