Yeah I'll make sure this criteria is written for future; but it's also a very normal thing that if you have an open source project, it was a README and license (that's industry standard rather than "hackathon" or "game jam" criteria). There were also 125 entries in the open source category, so it's a good way to help filter entries. Great work on your submission and yes it was super fun playing your game.
Thanks for clarifying the gameplay and music - it was certainly lots of fun.