This is neat! I really like the look of the thing: the ripply effect on the title screen is a lovely touch in particular. It’s a very small game, but it’s great to see something so complete for a jam.
SPOILERS
I found it a bit odd that the “nice” ending involved the creature doing the classic flashing red boss death while screaming. I also made the same mistake I see tripped up other people and tried flying way off to the right (which even brings up a nice big red arrow indicating there’s something you should check out - I assume because the creature’s not on screen and the assumption is that means you haven’t reached it yet). It would have been good to have some radio message saying “Stay in the mission area!” or something to indicate that there wasn’t anything to do over there.