The Room 3 (Three): Lost, Fourth Ending Walkthrough

The Room Three
By: Fireproof Games


This is a complete step-by-step walkthrough with hints, help, tips, tricks, answers and solutions for all the fourth alternate ending, Lost, of The Room Three by Fireproof Games. Only read this if you don’t mind spoilers. Feel free to ask for extra help in the comments section.

Chapter 1, The Lighthouse | Chapter 2, The Clock Tower. | Chapter 3, The Forge. | Chapter 4, The Observatory. | Chapter 5, The Projector, Imprisoned Ending. Release Ending | Escape Ending | Lost Ending

See my review for The Room Three.


Ending 4, Lost:

This is the final ending. If you’re missing any of the items needed, go back through my walkthroughs for the Release and Escape endings to find them.

You can also watch my video walkthrough for all three alternate endings here:

Go through the portal again and repeat everything up to the train door. Don’t go through.

This time, place the mysterious device on the right projector. But don’t turn it on yet. Look at the other side and find the screw. Use the screwdriver to unscrew it and slide the covering over to the right. Then, use your eyepiece to go inside and solve the laser puzzle to turn on the projector again like before. DO NOT GO THROUGH THE DOOR YET OR YOU WILL JUST GET THE RELEASE ENDING AGAIN.




Now, place the hexagonal mysterious device on the left projector and use the eyepiece to go inside and turn it on again. The door changes again. Go through to get the fourth and final ending, Lost.



Played all three of The Room games? See all the letters from them here.

Note: Sometimes a promo code is provided for a game, but it does not affect the review in any way. At AppUnwrapper, we strive to provide reviews of the utmost quality.

Check out my recommended list for other games you might like.

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14 thoughts on “The Room 3 (Three): Lost, Fourth Ending Walkthrough

  1. Juan mendoza

    My game went blank while I was playing the first alternate ending and now I cannot back into the game at all. What can I do?

  2. Cannan

    Thanks for the walkthroughs…I the alternate endings (3 of them) and this Game is nothing like I have ever seen…I wonder if any other Mobile Video Games can even boast of coming any closer to this one…Hope this saga continues…

    1. Joanna

      I loved The Room trilogy, but I found Forever Lost even better. There are 3 Forever Lost games plus a prequel called Alice’s Story. If you haven’t played them already you’re in for a treat. Enjoy!

  3. David Urquhart

    Thanks for your guide – my son and I play together and if we get stuck for too long it spoils the fun we have together. So thanks very much

  4. Cathy Seymour

    I love the game but I’m stuck on getting through the door with the beam of light on it. I have got the beam of light to go through centre but it doesn’t do anything. Thanks for your help

  5. Dee

    I have completed 3 of the alternative endings. We are now stuck on lost. We used our hexagon object in the previous ending and the game has not /will not reset so we can aquire it again. We are getting very frustrated. We cannot advance without the object and cannot get it again. What can we do. My son is frustrated, I’m frustrated. At wits end. Please help if you can. These walk throughs have helped my 5yo navigate the alt endings and I hate to ser him this stuck.

    1. Davina

      I have restarted the chapter 3 times. It brings us back to the center room with the safe already on the floor and the fortune teller already decommissioned… Going nuts

  6. Maddy

    I finished the first 3 endings then went to change my fate to do this one, but when I did that it restarted my whole game from the tutorial. Very annoying and inconvenient.


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