It's a hard game because simulate the flight of a plane. But is addictive and simple to control, just touch left or right to rotate and fly the plane.
To play with the Apple Watch turn the "Digital Crown" wheel.
1) Catch Colors: Fly and go through the balls of your color. Don't touch the balls that are not your color.
2) Escape Colors: Don't let the colored balls touch you.
How far can you go?