THEME wise, you've got a nice idea here - I like the idea of being caught in a bottle holding a miniature ship. I like that you have little pirates running around and I like that you've made these assets all on your own - producing art work at any level (especially if you are not an artist) is always challenging. So good work on this and the setup. I think a few things to consider would have been:
- Make the bottle WAY bigger to there is more to explore.
- Add a ship that has a door and that way you can create another level or two inside the ship
- Like someone else said, find a way to kill the pirates, even if it means just jumping on their heads Mario style.
- Add some cool music - these jams always have composers in the forum that are looking to collaborate.
Good luck and see you next year hopefully for another GameDev.TV jam.