I have no clue what I was doing, I just took a sleepy guy for ride (going to the UFO light beams, until they stopped appearing) while the turtles saved themselves and a ton of seabirds got stuck everywhere. A highscore of around 20 (no clue why it ended either), but since the highscore kept going up while on the end score screen, I guess something correct was still happening.
A very relaxing, though confusing experience.