Spheres of Lust are flying everywhere... (Usually they have an ass-shape.)
You may hunt on them - shoot with your Flying Dildos. (Hope, you know the ballistic laws!)
But they are very ingenious, it is not so easy, to hit into the Sphere of Lust!
When you hit it, you get to the next level of lust.
Aiming: drag the sight (with mouse or finger); Shooting: click to shoot.