Ever played SurvivalCraft? Minecraft? Fallout 4 Survival difficulty? You know them all (except Survival Craft).
You have 5 years until this jam is over.
You have to make a game, any style, any engine, any main character, basically it is your choice with the simple stuff.
BUT. There is one twist.
You have needs. Hunger. Thirst. Temperature. Sickness. You know it.
Make a game where you need to survive with those things.
There is criteria for how many needs the character has, and that's the main criteria.
There are other criteria for it too.