Hmmm...
Y'know, I'm all for a snarky response to a hypothetical question, but I can't help but ponder what I might get done if I put games aside for a bit. I have relatively poor impulse control when it comes to my free time. I tend to reach for video games more or less because they are the simplest joy I've access to. I don't count TV anymore, since it manages to piss me off pretty consistently.
To answer the question in earnest, I'd probably reapply myself to learning to play piano, get a lot more reading done, and maybe even some writing. Perhaps I'd even pick up that audio-editing software and try my hand at making some music. Maybe I'll take my attempts to learn how to sew a little more seriously and make some of my own duds: some gloves that will actually fit my stubby hands, a new utility vest, or even something as simple as a heavy wool cloak for this lovely Seattle weather (according to Lindybeige of YouTube they're actually quite functional).
Of course, the lynchpin of this whole thing is, "If I want to do these things, why haven't I done so already, despite video games?" The first answer that comes to mind is that I apparently don't want to do them bad enough. However, might it be that I just want to play video games more? If so, does that mean these other past-times are less fulfilling, less amusing, or maybe just not as appealing as I believe in my dewy-eyed ignorance?
I think that may be the intent behind the OP's question, if folks might be so kind as to cool their knee-jerk indignation/snark and give the question a think.
For my part, I think I know what I'll be trying out next month.