Hmm!
Sure!
If you've already - on your own time - made the theme, then feel free to share. (Thank you for dropping a link as well!)
(I'll be honest I have mixed feelings about submitting something premade, but honestly the game collection you made is a real jewel and I'd like people to see it.
And I'd like to encourage community.)
I'd also like to encourage you to make/learn something new if you have the time this month, as that is the real hope for the jam.
Maybe even stop in the discord if you're inclined! (https://discord.gg/ZtSK57c9sj)
You'd be a great person to talk to, as you could teach a lot in the community.
What you made is really amazing.
Thank you for asking! I'm hoping to hear more from you.