Knife Up is an online HTML5 game presented by yiv.com, it's playable in browsers such as safari and chrome. You can play the game on smartphone and tablet (iPhone, iPad, Samsung, Android devices and Windows Phone). You have a knife that wants to go up! The higher the climb, the higher the score! Make it more difficult. Aim at the apple in the middle, shoot! There's an extra score increase! Have fun! 83.33% of 116 players like the mobile game.