This game jam doesn't actually have a deadline; it's been open for a couple years and will continue to be open, so I'd suggest submitting something once you feel you've got something worthwhile and suitable. Ideally, the submissions should promote creativity, showing how being creative can be productive, helpful, and a part of life that is worth valuing. We started this game jam because we were asked by a former colleague to make a game for a student job fair at an international school in Africa, where they were hoping to encourage students to hold onto their creativity in the workplace, wherever that might be,

Hope that helps!