This is quite an original idea. I don't know what a Watcher is or why they need to be processed... but it's very mysterious and very creepy.
Overall the gameplay loop is quite satisfying. Scanning the crowds & trying to find out which ones are watching me is challenging and fun.
The graphics look good. The sound comes through with some static, unfortunately. Not sure if this is intentional.
The controls are not as responsive as they could be; sometimes I had to tap Space twice to change cameras, or click 2-3 times to process a Watcher.