Platform: Fedora Linux, Web
Looking through mouse (I used a touchpad) is impossible. Maybe not the game's fault, alas I tried it 3 times but couldn't get it to work. Looks like a nice game though.
Edit: It worked after doing full-screen. I think some instructions before the game starts would help a player figure out what's going on. I played multiple times before figuring out that you are in bullet time when the level starts.