It's difficult to define a "game" but I think submissions might have to be closer to the "game" end of the spectrum than an animation is, unless the animation offers an immersive, involved experience designed to convey meaning or story that fits the game jam's description. Is that alright?
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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!