Knife Roulette

Knife Roulette is an endless rage-quit game that challenges your patience, persistence, and thumb dexterity. Simple, minimal, and mindless - use your thumb to dodge the knife, rack up points, and beat your friends!
Can you grab the top score and not rage-quit? Heard you wouldnt.

Attribution:
background - by darkwood67 http://darkwood67.deviantart.com/art/Remaining-Light-129343582
woosh noise - Recorded by Mark DiAngelo
Ninja Samurai Sword noise - Recorded by Mike Koenig
https://creativecommons.org/licenses/by/3.0/us/