Over the years I've worked on a variety of games for this jam, both solo and collaboratively.
My solo entry Zen Garden was a meditative sandbox game that challenged players with Koans and became the basis for Aetheria: Weekend Retreat after quite a bit of revising.
I did two other collaborative entries:
Sword Hero was a rhythm-sword-fighting-king-of-the-hill game
Alice was a racing game where players could shrink & grow to outrun the rest. I do believe "caucus race" was used as a pun somewhere in there.
The site no longer has access to these as they were from years ago, but please feel free to visit them if you're curious.
If I find pictures or videos I'll be sure to share them.