The Room 3 walkthrough and guide, all the puzzles solved

Chapter 3: The Forge (cont.)

Room 3 walkthrough and guide chapter 3

Rearrange the blocks at the forge and make the next key. Use it to open the top level of the pyramid.

Room 3 walkthrough and guide chapter 3

Using the eyepiece, look inside the hole.

Room 3 walkthrough and guide chapter 3

We need to align the four gemstones along the bottom panel to solve this puzzle.

Room 3 walkthrough and guide chapter 3

Use the arrow button to select the gear on the left, then press the green button until the two gems on the inside are in position.

Room 3 walkthrough and guide chapter 3

Slide over to the gear on the right and press the green button until the third gemstone is in place.

Room 3 walkthrough and guide chapter 3

Finally, select the gear in the middle and hit the green button until the last gemstone has joined its comrades.

Room 3 walkthrough and guide chapter 3

Take the metal casting from the box, slot it into the panel at the front of the table, and slide the handle over to the third light bulb.

Room 3 walkthrough and guide chapter 3

Head through the newly opened door and turn the wooden handle on the right of this machine, prompting it to break off. That's what we wanted to happen, so don't panic.

Room 3 walkthrough and guide chapter 3

Pick up the piece of wood from the left and go back to the room with the circular saw.

Room 3 walkthrough and guide chapter 3

Pop the wood into the holder and slide it over to the left. Lift the handle to raise the saw blade and cut the wood in half.

Room 3 walkthrough and guide chapter 3

Take the small piece of wood and pop it into the milling machine on the other side of the room to get a lathed piece of wood.

Room 3 walkthrough and guide chapter 3

Take the lathed piece of wood to the machine you broke the handle off from and attach it in its place.

Room 3 walkthrough and guide chapter 3

Use your eyepiece on the piece of paper that's churned out to see three dials.

Room 3 walkthrough and guide chapter 3

Turn the dials so that the symbols match those above - from the wooden arm in the main room. You'll be rewarded with a camshaft.

Room 3 walkthrough and guide chapter 3

Take the camshaft to the wooden arm and plop it into place. Move the pin to the position above and rotate the dial until the hand relinquishes the key it's grasping.

Room 3 walkthrough and guide chapter 3

Use the key on the square peg on the side of the box at the top of the pyramid.

Room 3 walkthrough and guide chapter 3

Examine the key in your inventory and align the holes along the side.

Room 3 walkthrough and guide chapter 3

Use it to unlock the face decorated withfour prongs.

Room 3 walkthrough and guide chapter 3

Examine the key once more and rotate the end to match the position above.

Room 3 walkthrough and guide chapter 3

Use it on the bar with the groove running down the middle.

Room 3 walkthrough and guide chapter 3

Claim your prize to finish the chapter.

Chapter 4: The Observatory

Room 3 walkthrough and guide chapter 4

Add the pyramid to the collection on the table and pick up the book.

Room 3 walkthrough and guide chapter 4

Go up the stairs to the library and place the book on the stand to reveal a hidden lift.

Room 3 walkthrough and guide chapter 4

Ride the elevator up to the next floor and head across to the other side of balcony to get the power started.

Room 3 walkthrough and guide chapter 4

Arrange the sliders like so, flip the lever, and do the usual at the box.

Room 3 walkthrough and guide chapter 4

You can't complete the next step because the panel is broken. Grab the screwdriver from the left.

Room 3 walkthrough and guide chapter 4

Take the lift back down and leave the library. Make your way back to the study, via the doorway with the red curtain, and use the screwdriver on the panel here.

Room 3 walkthrough and guide chapter 4

Remove the electrical component and retrace your steps to the broken panel.

Room 3 walkthrough and guide chapter 4

Insert the electrical component into the broken panel and close the compartment. Use the dial on the left to make the light switch on, and the dial on the right to line up the waveforms.

Room 3 walkthrough and guide chapter 4

Head through the doorway and into the observatory.

Room 3 walkthrough and guide chapter 4

Examine the circular panel to the right and spin the blue pieces around until all four lights are lit up.

Room 3 walkthrough and guide chapter 4

Remove the etched disc and go over to the table on the other side of the room.

Room 3 walkthrough and guide chapter 4

Turn the handle on the gold dome to open it up and drop the etched disc inside.

Room 3 walkthrough and guide chapter 4

Rotate the discs to complete the image and take the crystal star.

Room 3 walkthrough and guide chapter 4

Insert the star on the large star map opposite, then poke the gems along the dragon's body pictured above, to mirror the Draco the Dragon image from the etched discs.

Room 3 walkthrough and guide chapter 4

Take the telescope lens and parchment and return to the desk. Place the parchment over the tablet and scooch it down to the position above. Make a note of the symbols in the holes.

Room 3 walkthrough and guide chapter 4

Turn the wheel at the back of the room to bring the telescope down.

Room 3 walkthrough and guide chapter 4

Zoom in on the star dial and turn the display until the image from the tablet is highlighted.

Room 3 walkthrough and guide chapter 4

Do the same with the moon dial.

Room 3 walkthrough and guide chapter 4

Replace the broken telescope lens and twirl the knobs around to complete the constellation. Pick up the metal plate.

Room 3 walkthrough and guide chapter 4

Pop the metal plate onto the tablet. Use your eyepiece and make a note of the next symbol for the star dial.

Room 3 walkthrough and guide chapter 4

Slide it down and you'll see the symbol for the moon dial.

Room 3 walkthrough and guide chapter 4

Back at the telescope, zoom in on the star dial and line up the display as shown.

Room 3 walkthrough and guide chapter 4

Do the moon dial next.

Room 3 walkthrough and guide chapter 4

Use the knobs to line up the next constellation and take the iron handle.

Room 3 walkthrough and guide chapter 4

Go into the hallway outside of the room with the telescope and use the iron handle to unlock this door.

Room 3 walkthrough and guide chapter 4

Head over to the stand on the left.

Room 3 walkthrough and guide chapter 4

Examine the left side and rotate the dial around to line the compass points up correctly and take the round gear.

Room 3 walkthrough and guide chapter 4

Slide open the gold bars in the middle of the table to find a square gear.

Room 3 walkthrough and guide chapter 4

Turn the dial on the right to unscramble the image and turn the power on.

Room 3 walkthrough and guide chapter 4

Back in the corridor, pull this lever to open the door.

Room 3 walkthrough and guide chapter 4

Grab the sundial from the table and go back outside to the stand we were just fiddling with.

Room 3 walkthrough and guide chapter 4

Pop the sundial into the hole on the left and twirl the arm around to the three.

Room 3 walkthrough and guide chapter 4

Head to the three on the big sundial and pull on numerals to pop it open.

Room 3 walkthrough and guide chapter 4

Slot the round gear into the bottom left corner and turn the handle until the metal plate moves to the left side. Pick up the round gear and the new triangular gear.

Room 3 walkthrough and guide chapter 4

Slide the bottom metal plate to the right, and slide the metal plate on the upper right downwards. Pop in the three gears at the bottom right, as shown above, then turn the crank until a handle springs out. Pick it up along with your gears.

Room 3 walkthrough and guide chapter 4

Slide the handle into the base of the stand and pick up the intricate orb.

Room 3 walkthrough and guide chapter 4

Open your inventory to examine the orb. Pull the small handle down and out to receive a brass handle.

Room 3 walkthrough and guide chapter 4

Open up the intricate orb to find an orb with a socket.

Room 3 walkthrough and guide chapter 4

Examine the brass handle and use the rectangular slider at the bottom to rotate the circle on the end.

Room 3 walkthrough and guide chapter 4

Return to the board beneath the sundial. Insert the gears onto the circular panel and stick the brass handle into the hole on the left.

Room 3 walkthrough and guide chapter 4

Turn the brass handle to rotate the set of gears to the position shown, then turn the crank at the bottom to move the metal plate at the top to the outer edge of the board.

Room 3 walkthrough and guide chapter 4

Once the scenery has changed slightly, examine the orb closest to the sun. Slide the switches at the top down and then push the button at the top.

Room 3 walkthrough and guide chapter 4

Move along to the second planet and use the orb with a socket, then press the top button.

Room 3 walkthrough and guide chapter 4

Spin the four sections to complete the map of earth on the third globe, and push the top button.

Room 3 walkthrough and guide chapter 4

Examine the moon and rotate the wire frame to line up with the hole. Grab the metal casting from in here.

Room 3 walkthrough and guide chapter 4

Go back to the stand, make a note of these symbols, and grab the lens cover.

Room 3 walkthrough and guide chapter 4

Use your eyepiece and zoom in on the miniature building now visible in the top corner.

Room 3 walkthrough and guide chapter 4

Arrange the dials to form this pattern and place your casting into the small plaque that appears.

Room 3 walkthrough and guide chapter 4

Whip out your eyepiece to look inside and investigate the podium to the right.

Room 3 walkthrough and guide chapter 4

Turn the dial on the outside to open up the globe and pick up the stone carving.

Room 3 walkthrough and guide chapter 4

Head back to the telescope and enter the symbols from the stand by the sundial.

Room 3 walkthrough and guide chapter 4

Do this for the both the star and moon dials.

Room 3 walkthrough and guide chapter 4

Place the lens cover onto the telescope and turn the dial on the left to the symbol shown. Spin the squares around until they fit over the pyramids.

Room 3 walkthrough and guide chapter 4

You'll automatically be taken to a new room. pop the stone carving onto the podium in here, turn the outer handles to the position above, and push the button.

Room 3 walkthrough and guide chapter 4

The next task is to match the coloured nodes with their counterparts on the floor in this room.

Room 3 walkthrough and guide chapter 4

For the first step, rearrange the nodes like so.

Room 3 walkthrough and guide chapter 4

Now for step two.

Room 3 walkthrough and guide chapter 4

Jiggle everything around like this, then pop the yellow node into its proper place in the centre.

Room 3 walkthrough and guide chapter 4

Head over to the large blue globe.

Room 3 walkthrough and guide chapter 4

Spin the globe around using the segmented red light to guide you to the symbols.

Room 3 walkthrough and guide chapter 4

There are a total of three symbols to find.

Room 3 walkthrough and guide chapter 4

Once you've found them all, turn your attention to the screen to the left.

Room 3 walkthrough and guide chapter 4

Etch each shape onto the grid without breaking contact with the surface of your device.

Room 3 walkthrough and guide chapter 4

Once you've entered all three and lit up the red lights, the circular screen will come to life.

Room 3 walkthrough and guide chapter 4

The POV is from inside this maze. You need to reach the pressure plates (marked by circles on the map), then navigate the central room, entering via the door with the matching symbol.

Room 3 walkthrough and guide chapter 4

So after stepping on this plate, for example, use the map to make your way to the central room via the door on the right. Just use the map and you can't go wrong.

Room 3 walkthrough and guide chapter 4

Once you've successfully completed this task, take the orb from the shattered screen.

Room 3 walkthrough and guide chapter 4

Go back outside and slot the orb onto the vacant spot at the outer edge of the solar system model. Press the button on top and use your eyepiece to look inside.

Room 3 walkthrough and guide chapter 4

There are two small arms on the cylinder inside. You can lock the segments into place using the handles. Arrange the cylinder so that there are two vertical grooves beneath the large handle so that you can pull it down.

Room 3 walkthrough and guide chapter 4

Back outside, push the button on the orb and pick up the pyramid to end the chapter.

Ending 1: Imprisoned

Room 3 walkthrough and guide Ending 1

After collecting the last of the pyramids at the table, take the Craftman's key and go through the portal.

Room 3 walkthrough and guide Ending 1

Insert the key at the top of this mechanism to open it up.

Room 3 walkthrough and guide Ending 1

Zoom in on the edge of the table and pick up the metal ring.

Room 3 walkthrough and guide Ending 1

Slot it onto the circular plate at the front of the box.

Room 3 walkthrough and guide Ending 1

Use the eyepiece to look inside and line up the holes beneath the pistons. Use the lever on the left to switch between the three sections, and rotate the gears with the dial. Press the button once they're aligned.

Room 3 walkthrough and guide Ending 1

Back outside, slide the mirror over to the left to redirect the light beam.

Room 3 walkthrough and guide Ending 1

Take the second mirror from the compartment beneath the table.

Room 3 walkthrough and guide Ending 1

Place it on the inner ring and move the first mirror back to where it was, and out of the way of the beam.

Room 3 walkthrough and guide Ending 1

Use the eyepiece to look inside of the Craftman's key. All four beams in here need to point at the crystal. One button rotates the lasers while the other locks one pair at a time in place. Have a tinker - it's a simple enough puzzle to solve.

Room 3 walkthrough and guide Ending 1

Enter the train door to finish the game with the Imprisoned ending.

Ending 2: Escape

Room 3 walkthrough and guide Ending 2

Take the Craftman's key, but ignore the portal. Head up the stairs to the library.

Room 3 walkthrough and guide Ending 2

Pull open the token drawer on the Mystical Maggie machine and take the small mechanism.

Room 3 walkthrough and guide Ending 2

Inspect the small mechanism in your inventory and rotate the outer circle to turn it into a key.

Room 3 walkthrough and guide Ending 2

Head down to the office and use the key on the desk drawer on the right.

Room 3 walkthrough and guide Ending 2

Open it up and slide the latch on the side,

Room 3 walkthrough and guide Ending 2

Pick up the handle and use it on the desk drawer on the left.

Room 3 walkthrough and guide Ending 2

Flip the latch on the inside of this drawer to unlock the metal disks on the middle drawer.

Room 3 walkthrough and guide Ending 2

Rotate the disc on the left to expose a switch. Slide it over to unlock a cupboard on the right. Look inside.

Room 3 walkthrough and guide Ending 2

Slide the plate to the right and push the left switch up.

Room 3 walkthrough and guide Ending 2

Slide the plate to the left and push the right switch down.

Room 3 walkthrough and guide Ending 2

Slide the plate all the way over to the right and flip the last switch.

Room 3 walkthrough and guide Ending 2

Back at the middle drawer, rotate the discs so they're arranged like so. The drawer will open. Take the token out of it.

Room 3 walkthrough and guide Ending 2

Use the token at the Mystical Maggie machine in the library to receive a crank wheel.

Room 3 walkthrough and guide Ending 2

Make your way back to the room that you began the game in and use the crank wheel to open the gate.

Room 3 walkthrough and guide Ending 2

Pull all three levers to extend the drawers.

Room 3 walkthrough and guide Ending 2

Use the switches to indicate one number on each row. The total must equal the number at the top. Here's the solution for the first drawer.

Room 3 walkthrough and guide Ending 2

And the second.

Room 3 walkthrough and guide Ending 2

And the third.

Room 3 walkthrough and guide Ending 2

You'll be deposited in front of this board. Line up the switches with the illuminated notches. You'll be directed back to the library.

Room 3 walkthrough and guide Ending 2

When you get there, the phone will be ringing. Pull the lever over to the right to answer it and pick up the key.

Room 3 walkthrough and guide Ending 2

Retrace your steps back to the room with the maths drawers and use the key on the box on the table.

Room 3 walkthrough and guide Ending 2

Four drawers will light up in a random sequence. Open them in the same order and if you did it correctly, you'll get another token.

Room 3 walkthrough and guide Ending 2

Insert the token into the Mystical Maggie machine to get the crank handle.

Room 3 walkthrough and guide Ending 2

Pop over to the upper level of the library and close the poster book. Take the metal cube from the outer cover.

Room 3 walkthrough and guide Ending 2

Leave the library and head to the greenhouse.

Room 3 walkthrough and guide Ending 2

Place the cube onto the dish on the left and it'll recede inside.

Room 3 walkthrough and guide Ending 2

Look trough the panel with your eyepiece and cycle through the alternate shapes with the arrow keys until you get a sphere. Press the middle button to eject it.

Room 3 walkthrough and guide Ending 2

Get back to the poster book in the library and insert the sphere into the indentation on the right side. Open the book and use the eyepiece to look inside the pop-up theatre.

Room 3 walkthrough and guide Ending 2

Press the button on the gramophone to retrieve the blank wax cylinder.

Room 3 walkthrough and guide Ending 2

Insert it into the gramophone in the library.

Room 3 walkthrough and guide Ending 2

Head to the greenhouse and turn the handle on the gramophone here, then dial the phone in the library. The number is 1795 - from the front of the phone box.

Room 3 walkthrough and guide Ending 2

Return to the library and answer the phone. This will kick the gramophone into action. Take the etched wax cylinder.

Room 3 walkthrough and guide Ending 2

Head back into the pop-up theatre and use the etched wax cylinder on the gramophone. Press the button on the front and take the token from the drawer.

Room 3 walkthrough and guide Ending 2

Use the token on the Mystical Maggie machine once again and take the metal device from the drawer.

Room 3 walkthrough and guide Ending 2

Take the elevator up to the top floor and attach the metal device to the fixture on the balcony.

Room 3 walkthrough and guide Ending 2

Use your eyepiece and rotate the wheel to line up the top two segments of the key. Move the camera to align the bottom part. Pick up the key that appears.

Room 3 walkthrough and guide Ending 2

Go back to the greenhouse and poke these loose bricks out of the wall. Use your eyepiece to peek inside.

Room 3 walkthrough and guide Ending 2

Line up the discs to create the shape of a keyhole.

Room 3 walkthrough and guide Ending 2

Zoom out and enter the main part of the greenhouse. Inspect the other side of the wall with the loose bricks. There's now a keyhole here. Pop the key in but don't turn it. Go back around to look inside the hole on the other side.

Room 3 walkthrough and guide Ending 2

Examine the end of the key - it's on a slightly larger scale in here. Turn the handle and zoom out again. Turn the key around 180 degrees, then come back to the hole and turn the handle again.

Room 3 walkthrough and guide Ending 2

The drawer beneath the key will have popped open. Grab the token and head to Mystical Maggie again.

Room 3 walkthrough and guide Ending 2

Take the mysterious artifact and head through the portal at last.

Room 3 walkthrough and guide Ending 2

Put Craftman's key into this mechanism to open it.

Room 3 walkthrough and guide Ending 2

Take the ring from the edge of the plinth. Pop it onto the circular section on the front of the nearby box and use the eyepiece to look inside.

Room 3 walkthrough and guide Ending 2

Line up the holes beneath the pistons and push the button.

Room 3 walkthrough and guide Ending 2

Move the mirror to the left to divert the light beam.

Room 3 walkthrough and guide Ending 2

Take the mirror from the compartment underneath the table and position it in the middle of the inner ring. Return the first mirror to its original position.

Room 3 walkthrough and guide Ending 2

Look inside Craftman's key and solve the laser puzzle as before.

Room 3 walkthrough and guide Ending 2

The train door will appear in the wall opposite. Ignore it and place the mysterious artifact onto the podium on the left. Spin the dial and look inside using your eyepiece.

Room 3 walkthrough and guide Ending 2

Turn the dial around so that the small window is opposite the beam. Rotate it in sync until the the outer lights are lit up.

Room 3 walkthrough and guide Ending 2

Ending 3: Release

Room 3 walkthrough and guide Ending 3

Pick up Craftman's key, ignore the portal, and head into the office. Use your eyepiece to look at the grandfather clock. This is synced to the clock on your device. At 15 minute intervals, when the hand reaches the blue lines, the body of the clock will open.

Room 3 walkthrough and guide Ending 3

Once the clock is open, take note of the pendulum. As it swings, you'll spot some magnified numbers. Set the weights to the corresponding numbers. They are 4, 1, and 2.

Room 3 walkthrough and guide Ending 3

Pick up the crystal and take the lift from the library to the top floor.

Room 3 walkthrough and guide Ending 3

Use this sphere to control the momentum of the hanging weight and direct it into the safe.

Room 3 walkthrough and guide Ending 3

The safe will land in the central room where the portal opens up. Take the crystal and go to the greenhouse

Room 3 walkthrough and guide Ending 3

Pop the crystals into the machine on the desk and turn the crank to the right.

Room 3 walkthrough and guide Ending 3

You'll find yourself having to navigate another maze. Follow the pointer at the edge of the screen to reach the goal.

Room 3 walkthrough and guide Ending 3

Take the mysterious artifact and head through the portal.

Room 3 walkthrough and guide Ending 3

Once again, insert the key at the top of this mechanism and pick up the metal ring from the edge of the table.

Room 3 walkthrough and guide Ending 3

Use the ring on the front of this box and look inside with the eyepiece.

Room 3 walkthrough and guide Ending 3

Line up the holes underneath the pistons and push the button.

Room 3 walkthrough and guide Ending 3

Move the outer mirror into the path of the beam, then grab the second mirror from the compartment beneath the table.

Room 3 walkthrough and guide Ending 3

Place the second mirror into the centre of the smaller ring, and move the first mirror back to its original position.

Room 3 walkthrough and guide Ending 3

Solve the simple laser puzzle inside of the key.

Room 3 walkthrough and guide Ending 3

Ignore the train door and place the mysterious artifact onto the podium on the right.

Room 3 walkthrough and guide Ending 3

This is a slightly more complex version of the other laser puzzle. Focus on getting four lasers in sync as they rotate. Hold two in place then rotate the four other lasers to aim beams at the crystal.

Room 3 walkthrough and guide Ending 3

Push the button on top and go through the wooden door for the Release ending.

Ending 4: Lost

Room 3 walkthrough and guide Ending 4

Pick up the Craftman's key from the table. You should have two mysterious artifacts in your possession after running through the release endingand the escape ending. With these three things in your inventory - and the screwdriver - head through the portal.

Room 3 walkthrough and guide Ending 4

Put the Craftman's key onto this mechanism to open it.

Room 3 walkthrough and guide Ending 4

Take the metal ring from the edge of the table.

Room 3 walkthrough and guide Ending 4

Use the metal ring on the box and use the eyepiece to look inside.

Room 3 walkthrough and guide Ending 4

Line up the holes again as we did with the other endings so that they're underneath the pistons.

Room 3 walkthrough and guide Ending 4

Move the mirror over to the left to divert the beam and grab the second mirror from the usual compartment under the table.

Room 3 walkthrough and guide Ending 4

Pop it onto the inner ring and return the first mirror to its original position.

Room 3 walkthrough and guide Ending 4

Use the eyepiece to look inside the Craftman's key and solve the laser puzzle.

Room 3 walkthrough and guide Ending 4

Ignore the train door. Place the artifacts on the podiums. Look at the rear of the one on the right and use the screwdriver on the metal plate.

Room 3 walkthrough and guide Ending 4

Pull the plate back to reveal a lens, then turn the dial on the front and use the eyepiece to look inside.

Room 3 walkthrough and guide Ending 4

Figure out the laser problem once more, zoom out of the box and press the button on the top. Ignore the wooden door and head over to theotherartifact.

Room 3 walkthrough and guide Ending 4

Use the eyepiece to look inside and solve this puzzle again. Zoom out and press the button on the top.

Room 3 walkthrough and guide Ending 4

There should be three projector lights shining on the screen, and instead of a door, you'll just see a hole. Step through for the last ending.

And that's it. You've solved all of the needlessly elaborate puzzles apart from the one that really matters: What is the Null and what's at the end of all of those tentacles?

Ready for more? Check out our list of the very best puzzle games...

Shabana Arif
Shabana was born looking like a girl wearing a Pikachu hoodie, so when such things became popular, she fitted right in. She writes guides, reviews and features for GR+ when she isn't screaming at Dark Souls 2 on YouTube.