Knife up - Hit the target can be played anywhere, anytime when you get bored or you want to enhance your reaction time. Furthermore, this game is children friendly. Let your children play when you need space to work from home. Knife Up, reaction time, reflex training, action game, kids game, children's games, shooting game, target practice, hand-eye coordination, reaction speed, skill game, boy games, boys games, online games, free games, mobile games, shooting skills, reflexes, quick thinking, cognitive skills