The theme of the jam is An Escape
The protagonist's main objective must be to escape from somewhere or someone.
They could be escaping from a place like a prison or desert island, or they could be escaping from a person or people such as a debt collector, a mafia, the police, etc.
The escape must be the main objective of the game, and not just something that happens briefly in one part.
It also must be literally an escape. The word "escape" is often used metaphorically in many situations like "escaping addiction" or "escaping a bad relationship" but these will not fit the theme. This is largely because this opens the door for almost anything to be shoehorned in if it is phrased as an "escape," so the escape must be a literal one from a place or person or people (or animal?), and the protagonist must be aware that their goal is to escape.
Have fun with the jam!