I loved the concept of the game, so creative! The mechanic of phasing through the brain was really cool and felt nice and fluid. I got caught for a while on the first part you have the little cancer cells/virus/bad guys, but I eventually got through. There maybe should be a better way to defend myself or attack them? I think it would also help to have the camera back up a bit more so players can see where they're going better and plan ahead. Overall, cute concept!