Me and my friend Polly teamed up to do a game for Ruin Jam! It's a sorta-DOS-y 2D platformer about exploring a planet to find your lost crew, with a satirical edge befitting the Jam's theme. We spent about two weeks on it, and I think it turned out really well!
I did most of the code work since I have a lot of experience with that sort of thing, but the main idea, the structure, the art, and a lot of the level designs were all Polly's. I had an absolute blast working on it, and I hope to do more co-op projects in the future, with Polly and with other artists.
You can play it for free over on my games page or at Itch.io. Give it a look! (Also maybe take a look at the other Ruin Jam games!)