I think it's just impressive that you managed to create this game by yourself. Doing a jam by yourself can be challenging and I am so glad you pulled it off. I still have some suggestions for this game, I wish there was another way to tell if the zombies are not real and I'll explain why. With the current system in this game, the best time to use the detector is always when there are a lot of zombies on the screen, and it doesn't add too much "strategy" into the game. If you can tell that there are "not real" zombies on the screen by their looks or the way it walks, you can save your detector and not waste it when there are a lot of zombies on the screen and only 1 or 2 are not real (maybe even 0). I think you created an awesome game, I can't wait to see what you come up with in the future, keep up the good work!