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.
2 Games:
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?