Please enjoy the world of universal gravitation.
| Left-click | : | The planet is added. The menu is changed. |
| Right-click | : | The menu is changed. |
| [Color] | : | The color of the planet is changed. |
| "?" is a random color. | ||
| [Track] | : | The expression of tracks is changed. |
| line - Short line | ||
| long line - Long line | ||
| point - Dotted line | ||
| non - Non-display | ||
| [Target] | : | The planet is added in an arbitrary direction. |
| 1.The position of the planet is decided pushing the mouse. | ||
| 2.The mouse is dragged and the direction is decided. | ||
| 3.The mouse is separated. | ||
| [Random] | : | The planet is added in a random direction. |
| The speed of the planet is changed by the click. | ||
| [Circle] | : | Yen orbit planet is added. |
| [Star] | : | Addition & deletion of fixed star. |
| When the fixed star is clicked, it is deleted. | ||
| [Size] | : | The size of the planet is changed. |
| [Scale] | : | The magnification of the screen is changed. |
| [Speed] | : | The flow of time is changed. |
| 1/4 X speed from 8 X speed. As for 0, time stops. | ||
| [Reset] | : | Reset. |
| Other web game - [Popularity degree] | |||||
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