Dark Doors Escape Level 30 Walkthrough
a globe on left side
a telescope on right side
8 black circles on top with sun on the left corner
on right side there are a group of squares with green arrow
hint : solar system

dark doors escape stage 30 solution :
change each black circle into the correct order of planet
from the sun :
1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune
obtain the key from the telescope lens

open door and proceed to stage 31