Knife Up is a timing game: a target spins in front of you and you throw knives into it, one at a time. Every knife that lands stays there and becomes an obstacle for the next throw, so the target gets progressively harder to hit cleanly.
The spin is rarely constant — it speeds up, slows down and sometimes reverses — which turns what looks like a reflex game into a rhythm one.
Watch a full rotation before throwing so you know the spin pattern, and throw into the gap that's about to arrive rather than the one currently in front of you.
Every knife you land stays in the target and becomes an obstacle, so the available gaps shrink with each successful throw.
Yes — tap to throw. Nothing to install.