Swing-by Orbit

## Description

Swing-by using the gravity of planets!
Swing-by is the use of the gravity of a planet to alter the path and speed of a spacecraft.
Let's get on the orbits of planets or satellites and complete the mission in space.

[How to play]

\- Tap the screen to accelerate the spacecraft.
\- If the spacecraft crashes or is thrown out of the screen, the mission failure.
\- Let's adjust the acceleration and move from the orbit of the planet to the orbit of another planet.

[Mission]

\- Main mode
The mission to catch stars while coming back and forth between the earth and moon orbit.
Every time you cycle orbit, the score per star will also increase.

\- Planetary Exploration mode
The mission to explore planets in the solar system in order.
If you can circulate the orbit of planets, the mission is completed.

[Custom]

Consuming collected stars and customize the spaceship.
Customization such as improving the function of the spaceship and changing the skin is possible.