Mission Atlantis Island is the 40th island on Poptropica. It is also the second island to be released in episodes.

Plot Synopsis

From Poptropica Tours

It's a different world under the sea... but the ancient secret at the bottom of ocean is beyond your wildest dreams.
Poptropica Tours

Episode 1: Into the Deep

It was supposed to be simple: photograph rare sea creatures, then head back to the surface. But a stunning discovery leads you to a brand new mission!
—Poptropica Tours

Episode 2: Fortress of the Deep

You've discovered something amazing at the bottom of the ocean! Now, you need to find a way inside.
—Poptropica Tours

Episode 3: Out of the Blue

You're on the verge of the greatest discovery in human history-but an ancient intelligence has other plans.
—Poptropica Tours


Episode 1: Into the Deep

Oh look. You're on a boat again. Don't worry, it's not as hard as Skullduggery was. (for those who haven't played Skullduggery, it takes a LONG time.) Anyway, talk to the dude next to the giant crate in the water, Cam Jameson, and he'll tell you that he lost the keys to his submarine and that he needs the submarine in order to hunt down and film some fish for his new movie.

Retrieve the Keys

The man with the red beard has the keys, but he's not giving them up that easily. Jump up to the platform above him and click the bucket, spilling water all over him. He's annoyed, but doesn't lose his vice-like grip on those keys! You get the bucket, though.

Jump down and find the octopus. The octopus will squirt ink at you if you click on it, so do that for a bucket full of ink. Then go back up to the platform where you threw the water and use the ink bucket. The man will get ink on his helmet and in his eyes.

He drops the keys. Grab them, and return to the crazy filmmaker. He of course, will make you get in the submarine and film the fish for him. WITHOUT PAY. He'll hand you files about the fish and then you'll have to get down there. WITHOUT PAY.

Fish: Seadragon

First thing you see is a seadragon! Click on it and keep it in the frame for the perfect roll of film.

Fish 2: Cuttlefish Boogaloo

Next, we go for the cuttlefish! These squid-like critters are very shy and like to hide behind coral. The red ones are common, but the purple one is rare--we're going for that one. Go up to the fish to scare them into moving. Move each red fish short distances to inch the purple one up to the red coral, where we can see it. Click on it and stay still to get your shot!

The Fish and The Fishious: Stonefish Drift

Head down to the floor and you'll find the stonefish, a poisonous fish that for some reason looks like a stone. To get it to come out, you'll have to hide in the yellow coral beside you. When it comes out, click it to get footage!

BarrelEye (Fishteen Fishty Four)

If you head to your left, you can see the creepy barreleye fish inside a rock passage that you can't get into. You have to force it out using the deep-sea vents. Click on each vent from left to right, top to bottom, to force the fish into the open, and click for a picture that will haunt your dreams.

Fishy Fisher and the Order of the Anglerfish

Travel into the room to the far right and

Deeper Still...

On your way back to the surface you spot an unbelievably rare jellyfish called the Hydromedusa. And of course you have to follow it to get some footage, no matter how dangerous the thing is. Oh well. That's what worker's comp is for. You will follow it into the deep ocean and try to film it down. Then a million other Hydromedusa come swarming. Unbelievably rare indeed.

Oh, and then they electrocute your egg-sub which causes it to lose power and crash into the dark, cold, sinister depths of the unforgiving ocean. You try to get out of there, but you stumble upon an unbelievably rare discovery...some kind of...something. Well, it's got the filmmaker's interest, that's for sure, so in you go.

Episode 2: Fortress Of The Deep

A Big Door

Well, you're at the bottom of the ocean and there's a humungous underwater city in front of you. Investigating it would probably be dangerous and reckless. Let's do it.

Go to the right and break down that glass window in front of you. There's a glyph on the wall directly in front of you that kind of looks like a shephard's crook next to a stick of butter. Click on it to film it down. Now head to your right. LOOK! It's a circular doorway! But of course, it's locked. To unlock it, you must power all three parts of the door. So let's get to it!

Gobbling Goblin

Move into the area above you. The first part of the door is somehow powered by a goblin shark. I really don't know how but it just is. What is a goblin shark? Well you take a bowl full of shark, mix it with a pinch of barracuda, a spoonful of pirahna and the slightest dash of Warwick Davis.

To your right, you'll see that the doorway is connected to a weird cage-type thing with the goblin shark icon on it. The shark has to go in there. 

When you swim around, there'll be a few small red fish which run away from you and hide. If you follow them to the hiding place, they will start following you. get as many of those tiny fishies as possible. Just explore every single nook and cranny to find as many of them as you can. Break all the glass windows you come across. Don't worry, they have insurance. I hope.

Also, you WILL come into contact with the goblin ghark. Once it sees you, it's gonna attack. What I'm wondering is, how long has that shark been there waiting for someone to come by? Three weeks? A year?

Anyway, just dive down towards the cage you first saw when you came in. The goblin shark is crazy fast, like Road Runner on sugar high fast. But don't worry, the little fishes act like tiny Aztec human sacrifices for you. The Goblin Shark will only attack you once you run out of fishes. If you get the goblin shark into the cage, the cage will automatically trap it, restoring power to one third of the door.

But don't be so thrilled yet! It's hobo time! Now that the shark's taken care of, there are two metal artifacts in this area and two glyphs to film down. One of the glyphs looks like Finn's hat from Adventure Time and the other kind of resembles a legless rhino. Once you've gotten those, it's time to move on! Allons-y! Sorry, I've been watching too much Doctor Who.

Revenge Of The Jellies

JELLY! In every good Poptropica island, there's always a minigame that's just so mind-blowingly frustrating that you wish you could throw your computer out of the window, so you could then fix it, and then break it again with a medieval flail. This would be that part.

Go back down the way you came and then go to the right this time. You'll enter the jellyfish room. If you move down you'll see lots and lots of hydromedusa jellyfish. GRAAAAAAAAAAAAAAAGH!!! RAGE!

Anyway, you'll see lots of weird pink socket-type things all over the room too. If you get close to the hydromedusa jellyfish, one of them will leave the group and follow you. Lure it to the closest socket and it will start powering the socket. This will often open doors to new compartments and stuff like that. Sounds simple? Haha no. You have to be careful with the jellyfish because if it touches you, you will be elctrocuted and if it floats out of view, you'll have to start over at the beginning. And did I mention the ELECTRIC EEL?!? WHY WOULD YOU DO THIS TO ME CREATORS?!? ANSWER ME!!! I'M NOT CRAZY!!!

Please stand by...

Hi. Sorry about that. So all you have to do is power every single socket in the area. That wil open up the final compartment which is located at the bottom-right corner of the area. The compartment has a cage extremely similar to the goblin shark one. Lure the last jellyfish into the compartment and into the cage while avoiding the electric eel. I HATE YOU EEL! This will power another part of the door! Now you may express your frustration by pounding the keyboard to a fine gritty pulp.

After that, you still have to film down two more glyphs and find two more artifacts in THAT ROOM. So don't leave just yet. DON'T LEAVE ME ALONE! Ahem. The two artifacts are located in the top-left and bottom-left compartments. One of the glyphs looks like a diamond with a circle in it while the other looks like the number "40".

Now you're done! To the next level! Allons-y! There's no such thing as too much Doctor Who.

Everyday I'm Puffin' It

Ooh....bad pun! Terrible. No one liked that pun. Boo! Boo! *throws rotten tomato at self* Who threw that?

Well, go back to where you started and move down this time. You'll enter a room that looks like an abandoned Super Mario level. Look at all those pipes. Anyways, the pufferfish are trapped on the right side of the room. The pipe linking the pufferfish and the generator is broken. It's up to you! You have to bring the pufferfish to the generator on the left side of the room! You have to power the final part of the door! You have to save this realm from the might of the evil warlock Arcantos! I have no idea what I just said! GWARQ!

You can click the intersections between the pipes to rotate them. Once you've fixed the pipe, you can click the big red button (I LOVE ME A BIG RED BUTTON!) to jettison the fish through the pipes. If it works, you will power the third part of the door!

But wait, there's more! There are two artifacts stuck inside some pipes. To get to them, you'll have to rig the pipe system so that the right side of the room is connected to the pipe where the artifact is located. Then press the button so that the pufferfish is forced through the pipes and forces the artifact out. Do this for both artifacts.

You'll also have to film down the final glyph, which looks like a square with a crooked line. Now you have all the artifacts AND ALL the glyphs! This calls for celebration! BRING OUT THE GIRAFFES!

The Most Complicated Lock EVER

Now that you have all the artifacts, assemble them together to form a single artifact. Then go back to the doorway. See that weird circular thing with pink lights? That is not cotton candy, that is a place for you to put that artifact. Once you click on it, rotate the pieces so that it forms an image of a fish eating a fish eating a fish........ fishception.

Then the buttons around the image will light up. Click them in this order: Butter and crook, number 40, legless rhino, square with crooked line, Finn's hat, diamond and circle. Or if you don't understand my fliibery gibberish, you could just check the Mysterious Glyphs folder.

The door opens! And sucks you in to who-knows-where. Then Carlon Jeffries (the crazy guy from the first episode) tries to reach you but recieves a weird transmission in some weird language. But who cares? You completed the episode! WHERE'S THE GIRAFFE I ORDERED?!?

Episode 3: Out Of The Blue

After you went in, the door shuts behind, leaving you locked inside. Now, you go to the right of your screen, and keep going 2 times. When you reach the capsule room, go up but the ad room appears differently, you must jump!

Push The Ball!

After you made your way across the jumps, you search around the room and find a green button with a red dispenser. When you press the button, push the ball towards a container. Then it displays a memory of the ship, picture by picture. Then when it's done, it says 'Emergency Power'. Now press the button ontop to open the green door. Go to the first room and find another green button with a red dispenser. After that, it says 'Life Support'.

A Shark On The Loose

You go back the the capsule room and you notice the shark escaped. It went through a hole nearby, and it gets dark, then again light comes. You find another green button, you push it to the right and the shark will eat it. Keep going across and go through the loop. Do it again, but push the ball up. And the shark will not eat it.

Bug Bots

You will see a red Bug Bot coming and scanning you. It says 'Find me. Find me'. Don't follow it, go back to the first room and there will be a door that opened up. Go through it at now you will be on feet.

A Final Farewell

Go up and you see the Atlantis captain the collapsed. Click on his suit and it also collapses. Click the pink glowing touchpad and it displays the changing shape of the earth. And the place starts to collapse. Go back to the same door and it says 'GO HOME. THANK YOU'. The Atlantis city now starts to go up to the sky and teleports you down back on cam's ship. You have finally completed the island!


Episode 3 Concept Art



  • The jellyfish was called hydromedusa, however, hydromedusa is actually a genus of turtle. The correct term would be hydromedusan jellyfish.
2007 Early Poptropica Island | Shark Tooth Island | Time Tangled Island
2008 24 Carrot Island | Super Power Island | Spy Island | Nabooti Island
2009 Big Nate Island | Astro-Knights Island
2010 Counterfeit Island | Reality TV Island | Mythology Island | Skullduggery Island | Steamworks Island | Great Pumpkin Island | Cryptids Island
2011 Wild West Island | Wimpy Wonderland Island | Red Dragon Island | Shrink Ray Island | Mystery Train Island | Game Show Island | Ghost Story Island (members)
2012 Ghost Story Island (everyone) | S.O.S Island | Vampire's Curse Island | Twisted Thicket Island | Poptropolis Games Island (before sinking) | Wimpy Boardwalk Island | Lunar Colony Island | Super Villain Island | Charlie and the Chocolate Factory Island | Zomberry Island
2013 Night Watch Island | Back Lot Island | Poptropolis Games Island 2013 (rising) | BETA Carrotene | Virus Hunter Island | Mocktropica Island
2014 Monster Carnival Island | Survival Island | Mission Atlantis Island | PoptropiCon Island | Arabian Nights Island
2015 Galactic Hot Dogs Island | Mystery of the Map Island | Timmy Failure Island | Escape From Pelican Rock Island
2016 Monkey Wrench Island
2017 Crisis Caverns Island | 24 Carrot Island (Remastered)
2018 Greek Sea Odyssey

Start a Discussion Discussions about Mission Atlantis Island

  • Random Theory *minor spoiler alert*

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    • Monty Mongoose wrote: HPuterpop wrote:Great minds think alike! It all has to do with aliens, think Astroknights - The aliens on the moon th...
    • HPuterpop wrote:Monty Mongoose wrote: HPuterpop wrote:Great minds think alike! It all has to do with aliens, think Astroknights - The aliens...