Magic Map

Remember Marauder's Map from Harry Potter, and how it showed the location of every person in Hogwarts? This game was heavily inspired by that idea.

In Magic Map, you watch people walk around through this map of yours. People walk around and make regular sounds (footsteps, cough, etc). But some of them are not human. Your job is to listen for clues, such as growls, to identify the aliens. When you think you found them all, you can send in the troops to finish the job.

Were you correct?