I’m probably not the only one who found it difficult to beat Rooms & Exits Chapter 3 – The Planetarium. But I did it eventually, and today I am here to share a complete walkthrough for this level with easy-to-follow, step-by-step instructions so you can also complete it.
I recommend trying to beat the level by yourself, using the in-game hints and help, as well as your own puzzle-solving skills. But if everything else fails, read the complete walkthrough below!
Rooms & Exits Chapter 3 Level 4 Planetarium Walkthrough
- You’ll find a thief’s mask on the floor of the Planetarium.
- Check the green lamp in the front and take the neon light.
- Look at the video projector and take notes of the writing on it.
- x*y*z=m – 8*9*1=72
- y*a*b=m – 9*2*4=72
- c*b*e=m – 6*4*3=72
- Go to the podium and arrange the numbers so each line, both horizontal and vertical, so their product is the same:
- Inside you’ll find a camera lens.
- Now you can go to the other room, through the door on the left.
- Take a closer look at the telescope and take the Earth’s globe.
- Put the camera lens on the telescope and look at the stars.
- Go to the star charts on the wall and switch them to fit the image you’ve seen through the telescope.
- The middle chart will reveal a key behind it.
- Use it to open the glass cabinet with Mendeleev’s periodic table.
- Use the neon light above it and a few elements will get highlighted:
- Blue H 1
- Blue N 7
- Orange Mg 12
- Check out the bookshelves and drag the right number of books from left to right.
- The order is set by the clues on the right of the elements: 1-7-12
- Take the CD you find there.
- Look at the math paper on the desk.
- Solve the equations by dragging the numbers so they don’t repeat and make sense.
- There are more than one solution, but this code is eventually the good one.
- 41268 – 7935 = 3333
- Enter this code into the laptop and the CD into the laptop.
- Take the burned disc to the video projector in the other room.
- Turn it on and look at the ceiling and how the planets are arranged.
- It will look like this.
- The drawer will open and you can get the key to the Exit.
- Now you can leave the Planetarium.
And you’re done! You have completed the level!
If you still need extra help, don’t hesitate to comment in the dedicated section below. Or check out walkthroughs for the previous five levels listed here: