EndlessSpace

Order these by diameter.

Drag into order, smallest at the top. Solve one and another appears; miss one and the run resets.

Smallest
  1. 1Mercury
  2. 2Venus
  3. 3Europa
  4. 4Jupiter
  5. 5Phobos
Largest

Each try fills in a row: how many you placed correctly, never which.

1/3
2/3
3/3