For your first entry, this was really impressive. The mechanic couldn't have been easy to implement. I'm not sure how I'd go about tackling that project. Kudos for working that out and for submitting on time. That's something to be proud of!
As RedTeapot pointed out, nothing happened when I reached the flag, though it was a fun little puzzle to work out getting there.
You know all the stuff to include to make it better, because I'm sure it was on your list. I hope you keep jamming and submitting. They get better and better. Good work.