Molecular Jig Games want to get right down deep into someone’s body (yours, maybe?) in Immune Defense, giving you control of a medical microbot helping white blood cells defeat infections. It’s currently in the final hours of a Kickstarter campaign and doesn’t look like it’ll make it, but does have a browser-based demo so you can at least enjoy that.
Cool concept as this is, there have been games before that have drawn on similar ideas. Where they differ is that Immune Defense is also setting out to provide a little education on the subjects it uses as the basis of its gameplay.