Adding the heartbeat is a great move! Great vibe! 

I still didn't quiet get the hint, I think a tutorial would make the game easier to start! But still, nice work:)

Took me a moment to figure out what the instructions actually meant, but once they made sense it was a lot of fun! Really cool concept and super satisfying when you find the alien and blast them!

Couldn't seem to get past the menu screen :(

Took me a while to realize I needed to wave the crosshairs around like a madman to find a person/shapeshifter. Nice idea.

Very nice idea with a potential! I'd like it to be less chaotic, with a tutorial in the game itself, and more time for player to react and make decisions. Also it would be great to add some visual/audio cues for shooting and other actions. Overall it's a fun game once you know the rules, good job!

The heartbeat in the background adds so much intensity! it makes it so satisfying when you find the alien.