| Planets | Explorers | Satellites | Weights and Orbits | ||||
|---|---|---|---|---|---|---|---|
| Easy | Easy | Easy | Easy | ||||
| Intermediate | Intermediate | Intermediate | Intermediate | ||||
| Difficult | Difficult | Difficult | Difficult | ||||
| Challenge | Challenge | Challenge | Challenge |
Read game instructions again
Click here to get back to the Solar System