Wow, what a gem of a game! While I agree with the others, that it is not too adherent to the theme "only one", it's still amongst my favorite games this jam so far! The idea is very unique and cleverly put together. It's a bit too RNG-dependent at times, but given how enjoyable the core loop is, I barely took notice!
My game: https://njamster.itch.io/wonkey (playable in browser, not mobile friendly)