ISOLAND 3: Dust of the Universe – Walkthrough Guide

ISOLAND 3: Dust of the Universe

COTTONGAME, the makers of ISOLAND and ISOLAND 2, are back with the third game in the trilogy, ISOLAND 3. The puzzles can be tricky, as well as finding all the achievements. So this guide will help you if you get stuck. Feel free to ask for extra help in the comments section.

See my achievements guide here.


Page 1 | Page 2 | Page 3 | Page 4 |

1. Pick up the scissors and use them to cut out the paper drawing of the spaceship.

2. Once the spaceship lands, head right. Talk to the man sitting here and he asks you to help him build a fire. Continue on down the mountain to the beach.

3. Pick up the rock. Also, notice the drawing on the wall.

4. Notice the pearl that got washed up on the shore. You can’t pick it up. But go right, then back left to the beach again and you’ll see a clamshell. You still can’t pick it up. Go right and then back again and this time the shell will be replaced by a bugle. Pick it up.

(Achievement Alert! At the same time as the shell appears, so will a strange rock. Tap it to see that it’s really a crab and get the Environmentalist achievement.)

5. Head right again. This time, go up and pick the fruit from the flower.

6. Head back down. Go right.

(Achievement Alert! Feed the fruit to the bird to get the Chirpy Chirpy Cheep Cheep achievement. Just make sure to go back up after and get another fruit!)

7. Pick up the stick. Then tap on the door and solve the puzzle. You just need to make the metal rods pull in in the right order so none of them get stuck on the others. It’s different each time, but I’ve given the order for my puzzle below to give you the right idea. Then head inside.

(Achievement Alert! Tap one of the sign posts to get the Rock the Signpost (Don’t Rock the Signpost) achievement.)

8. Talk the the man here. He asks you to help him find his bugle. Since we have it already, hand it to him. He’ll play and part of the ceiling will collapse! Head deeper into the cave.

9. Grab the lamp key. Also, throw the rock through the middle top hole and then take the seed that pops out of another hole.

(Achievement Alert! Tap the long piece of moss on the right to get the Once in a Bloom Moon achievement.)

10. Go back to the guy with the bugle and throw the seed in the water. It will turn into some fruit and grow a flower. I’m not sure how to pick the flower yet, but grab the cube.

11. Go back inside the cave. Place the cube in the slot where you found the lamp key. The door will open. Go through.

12. There’s something buried in the dirt, but we have no way to dig it up just yet. Use the lamp key on the lamp and turn it to see a mural on the wall. It’s a clue! Either take a photo or copy the four symbols using the notepad.

(Achievement Alert! When you see the mural, you’ll get the His Dark Murals achievement.)

13. Go back to the beach. Head left to some vines and then up to a strange machine. Tap on it and change the symbols to match the ones you saw on the mural. The machine will start turning like a crank. It will act as a beacon.

14. Head back to where the bird is. There’s a boat! Get onto it.

15. Take the MOON sticker/ticket. Then talk to the captain. He talks about a red bird he saw once. Give him the fruit. Also, notice the number 1 by the triangles.

Click on the little numbers below to continue to the next page of the walkthrough or click here.

This Post Has 73 Comments

  1. Vron

    CanΓÇÖt even get pass the very beginning of the game- got the scissors, grabbed them and tapped on the paper. Multiple times- every corner every inch and nothing happens. Any advice?

    1. AppUnwrapper

      The latest update broke the game. You can move around and pick up items, but canΓÇÖt use them. :/

      1. smjjames

        Hopefully they’re quick with a hotfix. Anyways, I dislike the IAP, but the walkthrough pretty much negates that.

    2. Lynz

      Use it on the circle in the middle

  2. smjjames

    They pushed out a fix, which somehow didn’t show up in the account overview, but anyways, there is an update and it’s fixed now.

    1. Vron

      Awesome thank you

  3. Lynz

    Where do i use the shovel?

    1. smjjames

      Cave that you open up with [spoiler]the cube[/spoiler]

      Also, don’t erase your hint sketches! They persist with a new game!

    2. jbbjb

      Where you found a shovel?

      1. Lynz

        In the wall with the 3 doors. U will notice a crack in the wall

  4. Quinn

    what order do you go through the three doors in?

    1. Quinn

      Figured it out! I went through the left door twice and the red drops at the top turned blue, and then the right door twice (that one turned red), and then the middle door twice. And then the fourth door appeared.

    2. AppUnwrapper

      I donΓò¼├┤Γö£├ºΓö£├╗t know. 🙁
      IΓÇÖll try to see if I can find a clue, but it happened by accident.

      1. Dean

        This may be excessive, but this order works for me, with the numbers being the doors from left to right: 1,2,1,1,3,3,2,2.

        1. Dean

          on subsequent plays I’m finding that 1,1,3,3,2,2 is sufficient

          1. AppUnwrapper

            Yup! You go in left to get the shovel, leave through left, then continue with the sequence.

          2. AppUnwrapper

            Only thing is, I donΓÇÖt think thereΓÇÖs a clue for it anywhere? ThereΓÇÖs a too many trial-and-error puzzles in this game for my liking.

            1. Dean

              Might the dog’s blinking (and tail wagging) have something to do with it? I don’t have the patience to stare at it long enough to find out 🙂

  5. Lynz

    I dont understand the colours in spaceship clue? Turning all white to green uses up all 4 tries so cant change the others?

    1. AppUnwrapper

      I added the instructions for that puzzle to my guide.

  6. Lynz

    I cant change the colours in 4 tries? Do you have a video of how you did it?

    1. AppUnwrapper

      Not yet. IΓÇÖll make one ASAP.

  7. Dean

    I’ve played through 3 times and have found all but one flower. A couple of the odd achievements:
    Super hacker: through trial and error I found this is “sleep”
    Heeeeeelp Me: before torching the vines on the doorway, free the bug by tapping on it a few times. If you torch the vine and the bug flies off you don’t get the achievement
    Hidden Achievements
    Yesterday Once More – Find the lute. I found this but don’t recall when. I think it just came up during 2nd play
    Touchdown! – Watch the spaceship land. – let the credits play and wait, and wait a little more.

    1. AppUnwrapper

      Where do you see a bug in the vines? I canΓÇÖt see one and IΓÇÖve tapped all over the vines and donΓÇÖt get an achievement. Does it only work on the second playthrough?

      1. Dean

        The bug appears on the second round. When the vines are still covering the door, the bug is plainly visible.

    2. Ryan Zollinger

      You can get find the lute in round 1. You need to tap on the picture of the little girl holding a lute from isoland 2. I think that this is in the toy robot, but it could be in the dark room or by the window.

      1. CatReader

        Spoiler where lute achievement is: In the astronaut statue’s helmet (after finding his button), several items appear there. One is the photo of the girl with the lute; tap it.

    3. Kirbalicious

      Thanks for the ΓÇÿtouchdown!ΓÇÖ Achievement. I have got 20 out of 21 flowers as well, IΓÇÖm letting all The others bloom first then will see if the last one will show up.

  8. Job

    How to solve the color door. Been stuck all night

    1. Vron

      the Ones with the eyes?

  9. Ryan Zollinger

    Just started round two and it is WAY different! It’s way more changed than the round two in any of their other games. The puzzles are similar, but they have changed a bunch!

  10. Rhys

    Please help with the books and the sliding tile puzzle!

    1. AppUnwrapper

      IΓÇÖll get there soon. IΓÇÖm playing on two separate devices, but the game keeps resetting my save on my iPhone so I have to keep catching up again to get photos, etc. :/

    2. Wil

      Numbers in bookshelf tells you how many books must touch the circle with the number in.

  11. manji

    When will a man in a cave be good at trumpet?

    1. Ryan Zollinger


  12. Max

    Whats the last puzzle solution? The one with 4 color planet and the giant octopos

    1. Rashid

      Go to the room with the egg on a table, thereΓÇÖs a hint with the egg

  13. Marga

    I am really stuck on the puzzle with a time capsule. I have already seen the film, photos in the back room and files on the computer. But still no ideas. Can somebody help me? Please

    1. Cbcbcb

      Check the computer, again.

      1. Time capsule help

        Would you say the icons on the computer correspond in some way with the icons on the time capsule? IΓÇÖm not seeing the resemblance and not sure what else I could be looking at on the computer.

        1. Richard Roling

          Hints about the computer password please

          1. Leon

            Watch the movie

  14. ysk

    If anyone finds the last flower, please give me a hint

    1. manji

      I found it on the big fish’s back but I don’t know why it appeared.
      I think you should wait long time.

    2. Leta

      I got it the second time the leviathan showed up.

  15. Rashid

    I canΓÇÖt figure out the computer password

    1. Dean

      Watch the film again.

      1. Rashid

        Sorry, what film are you talking about?
        Update: I now realize thereΓÇÖs a projector in one of the rooms but cannot play the film on it, any hint for items needed to play the film?
        Update2: I figured it out, first I got the rocket to launch and got batteries then I got the robot fixed, then I found the film.

  16. Cbcbcb

    Having trouble on the face emotions puzzle in the backroom. I see different pictures with different facial expressions on the ship, but I’m having trouble putting it all together.

    1. Cbcbcb

      Nvm. Figured it out

    2. Richard Roling

      Please help me with the smiley puzzle

    3. Chris

      Me too. Smiley face puzzle

  17. mathey

    I’m stuck on finding the battery to power up the robot. Anyone have tips?

    1. Mathey

      Figured it out finally. The math problem with the rocket photos. 🙂

  18. Rashid

    The legendary giant fish achievement is tricky, what am I supposed to do to find this fish?

    1. Cbcbcb

      On round 2, stay by the puzzle that signals the ship.

  19. Cris

    Where can I find the clues to solve the Time Capsule? IΓÇÖm at a loss on this one.

    1. Time capsule help

      I figured it out! There are TWO computer passwords. Both of them are related to the Dark City film. One of the passwords just shows you a bunch of icons (nothing to be done with them), but if you figure out the other password it will show you the Time Capsule solution. Hint: Both passwords begin with S, but the one you’re looking for begins with SH.

  20. Dotty

    I think IΓÇÖve stuffed up,
    when you finish the game the first time, I restarted the game from the beginning again but now IΓÇÖve got to the coloured puzzle on the door to get in space ship I canΓÇÖt do it.
    Any ideas?

    1. glitchmomma

      I have noticed that the color puzzle has a pattern to how you have to do it. (IΓÇÖve done it a few times because I am a fool)
      Find the central part of the puzzle that is a group of one color (color 1)
      Change color 1 to the color closely surrounding it (color 2)
      Then change that WHOLE part (the combo of color 1 & 2 that is now all color 2) to the color surrounding that (color 3)
      ***Each time I did it there were remaining triangles that ruined it, but the trick is to change the WHOLE rest of the puzzle to that color (color 4) on turn 4
      I found it easiest to look for those triangles and work backwards.
      I donΓÇÖt know if this makes sense but hope it helps!

      1. banivani

        I’d love this to work, but my triangles seem a little too scattered and I can’t get a group that holds together enought to colour change in one go. If you or anyone has any more tips I’d be very grateful!

  21. Behnoosh

    Thanks for the usefull walkthrough , im waithing for rest of it

  22. Valerie

    Will the brothers ever play their musical instruments? Also what do I have to do to get the flower in the cave to grow?

  23. Bill

    I would have the first page of this tutorial done already if I could pick the strawberry/flower.
    I touch it and it floats off the right side of the screen??
    IΓò¼├┤Γö£├ºΓö£├╗m stuck and annoyed at this point…

    1. Laura Mipsome

      Touch it again in the air to grab it

  24. Cindy Almagro

    Thanks so much 4 ur help!😁

  25. XIX

    if you click on map,you’ll see our rocket which is locked has 3 sections and there’s a eye-like-symbol on ground and bunch of lines like the lines under floating pyramid and they connect to the eye symbol.
    How to get the rooms in rocket: 4 shapes, 4 slots;gives us 4!=24 combinations which one is for the floating thing, so remains 23 combinations

  26. CatReader

    Will you be publishing more walkthrough for ISOLAND 3? I am stuck just about the same place where your text w as lkthrough ends on Page 4.

  27. Olive oil

    I know the code to the spaceship time in the space ship but I donΓÇÖt know why itΓÇÖs that could someone tell me how to figure it out?

    1. jrburkh

      The puzzle is in the room with bookshelf – three photos on the wall. 1) The spaceship is traveling 20 m/s and it’s asking us to calculate the launch time. 2) is the distance traveled. 3) is the time it landed.

  28. Dorsa Astaraki

    The rocket launch time is 11:18 !
    Then take the battery and put it in the robot. Robot will show u the answer of the faces puzzle in the back door 
    It goes like this 
    🙂 😐 🙂 🙁 🙁 🙂 😐
    Then the video tape is in it . It is undeveloped so put it in the tray in the same room.
    Now tap on it there is another puzzle .
    This one has four round sockets which you should fill with the liquid colours on the right . U can find the answer in the astronaut’s helmet but remember it is a reflection so it goes like this 
    Upper sockets : 
    Left one is BLUE and the Right one is YELLOW 
    And the lower ones are like this 
    The left one is GREEN and the right one is RED 
    Now the film is developed put it in and watch it . When u watch the movie u reach one achievement and also the password of the computer .
    The password is SHELL .
    When u enter it u see some shapes with dots above the from one to four these shapes are the answer of the box in the closet. 
    The hand has 2 dots the waves have 1 dot , the eye shape has 3 dots and finally the worm has 4 dots . 
    There is a button in it with the letter R 
    Take it and put it into the astronaut’s helmet then push it u see a pencil .
    Take the pencil and put it in the box with two hands  
    A door opens and u see the sea monster .
    Tap on the planets and put them in the correct order based on what u saw in the other room on the table with egg and walnut and fork,… .
    A tunnel appears tap on it and this is the end of round 1 .

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