SwingBy is a game where you travel through a new universe using the dynamics of the gravitational slingshot.
The only thing the user can do is tap (and keep tapping) to use the energy to accelerate.
You cannot steer, the direction is determined by the gravity fields of the planets in the scene.
You lose energy accelerating or by the contact with the planets, and gain energy flying near the planets without touching them.
The goal is to travel the most, taking advantage of the gravity slingshots (swing-by) and using less energy possible.
You lose when you get stuck on a planet without fuel.
Enjoy the space flight and relax, let the gravity do the work!