This game later inspired one of the core mechanics of Duel-ity, it's also the origin of ouch.ogg and blem.ogg (which are also both in Duel-ity!).
I had enlisted Josh Squires as an artist partway through the jam. At the time I was using placeholder circles and was doing this cool interpolating trick. It looked pretty good but I figured with an actual artist we could replace it with sprites. Josh said something to the effect of "I think you're good." He still helped me pick out colors so I still gave him an art credit.
This game did surprisingly well in the jam, making top 100 overall. I didn't have high expectations for it, in fact, I didn't even spend the full 72 hours on it. I think the weird art style along with the tight level design resonated with people.