The fact it's a victim's hand makes it all the better ( ͡° ͜ʖ ͡°)
(ps: I wouldn't include that outro music after you lose. It gets annoying very fast. Or at least let us mute that music without muting the sound.)
This could be fun and I like the idea, but here are the problems.
The speed at which the knife falls is too slow and unintuitive.
The hotspot between the fingers is too stingy.
The speed at which the knife picks up is too slow, so it's impossible to stab between each finger.
The knife does not pass the thumb nor the pinky far enough when the hand finishes each pass.
You can cheat by repeatedly stabbing between the thumb and index and ignoring the other fingers without a penalty. This ruins the fun which is to stab between each and all fingers in a particular rhythm like we see on various TV shows.
"Let me win!" ~Katie Stone Perez talk at Casual Connect
If a person who wants to beat highscores is looking for a game like this, I'd recommend it.
The game always says "New Best: " but other than that fun timewaster
Pretty good game with good looks, but with this perspective it was kinda hard to aim :/