You need to incorporate the Theme into your game in some way and before you submit it, you will need to write atleast 1 short sentence about how your game fits the Theme of the game jam. It's completely up to you how you interpret the theme. Feel free to be creative with it.

Theme: Song of the Sea

Bonus Challenges: Unlike the Theme, these are entirely optional. Feel free to do one, two, all of them or ignore them completely.

For this game jam, the optional challenges are the following three:

1 - The High Seas: The game includes sailing and/or swimming as a game mechanic and is primarily set at and around sea, small islands, coastal areas, aboard ships, underwater etc.

2 - Watery Grave: The player character can drown in the game and/or be killed by some kind of sea monster (be it as a part of a non-standard game over or otherwise).

3 - Sapphire Bracelet: A sapphire bracelet is a significant item in the game.