Well trust me, your teacher will not really care about your game, he’ll only care about the content. So just include lots of sciencey stuff, and you’ll be fine. Plus, you don’t even need to make it, so you can make it as outrageous as you want!! So be super-creative, and make a game that can’t even physically be played! Like, you’re in outerspace, and you need to measure asteroids. Two people have to completely measure they’re asteroid’s diameter, circumference, temperature, desnisty etc, and get their measurments back to their home base before the asteroids enter the Earth’s atmosphere xD

Checkers with a fat guy?