Agree with AntiCebo, feels like a captcha game haha.
You are not given enough time to click the shape after its vibrates, even if it vibrates a millisecond before you were about to click on it you get the gameover screen.
Viewing post in Find the Shapeshifters jam comments
The vibration is meant to be a sign that you took too long and that it's already "game over", but I can see how it might seem more like a warning that it's almost "game over" instead. I'll consider making a future update to allow input during the vibrating—if not in general, then perhaps as a new difficulty mode or as an expanded gameplay element to spice things up. Thank you for the feedback!