Octo Expansion
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Octo Expansion is paid downloadable content for Splatoon 2 that is scheduled to be released on July 31, 2018.[1][2]
Story
The player takes the role of Agent 8, an Octoling with amnesia who finds themself in a strange subway station connected to a series of research facilities deep underground.
Gameplay
Octo Expansion adds a new single-player campaign consisting of 80 levels. Off the Hook will support Agent 8 from above ground, and their help can be used to skip missions that are too difficult.
Each station has a Telephone, where Agent 8 can learn the details of the mission. The Telephone also provides Agent 8 with the CQ-80 device (a flat controller shaped like a submarine), used to navigate the underground; and a CQ Card, which is used to store CQ Points.
Entering each mission costs a set amount of points, for 3 lives. The player can then choose between multiple challenges, each with a different weapon set. Depending on the weapon set chosen, a different amount of points is awarded (harder sets provide bigger rewards).
If the player loses all three lives, they may continue from the last checkpoint by paying more points, restart the level for free, abandon the level and return to the subway, or ask for help from Off the Hook to skip the level.
The normal Octarians from Octo Canyon are replaced with Sanitized Octarians, which are a distinctive shade of sickly green.
Enemy Octolings will be able to use more main weapons and special weapons, only seen in online multiplayer modes until now. For example, in the trailer, an enemy Octoling is shown chasing Agent 8 using an 
Inkjet. A select amount of levels will also be special only, meaning Agent 8's special bar will never go down.
After completing the campaign, players will be able to play as a male or female Octoling in multiplayer gameplay and customize them just like Inklings. Gear and weapons will be shared between the characters in the same account.
A short gameplay video of one of the missions was published on April 30, 2018. It shows Agent 8 on a mission requiring her to defeat all enemies within 2 minutes. The enemies are Sanitized Octotroopers, Octosnipers and Octocommanders situated, along with Balloon Fish on floating platforms, which Agent 8 can make spin by shooting her 
Splat Charger at Ink Switches. This video also marks the first appearance of canisters similar to the special weapon canisters from Octo Canyon, as well as metallic briefcases. Both are marked with the same logo as the CQ-80 and the CQ Card, unlike the Octo Canyon canisters that show the Ammo Knights logo.
The objective of the missions were revealed in a short gameplay video of Stamped Up Station. It is a large black object that does not appear to be alive.
Characters
- Cap'n Cuttlefish
- Pearl
- Marina
- Agent 3
- Agent 8
- C.Q. Cumber
- Telephone
- Iso Padre
- Dedf1sh
- Denizens of the deep
- Unknown pair of longsnout dogfish characters
- Unknown blobfish character
- Unknown pair of flashlight fish characters
- Unknown pair of gulper eel characters
- Unknown trio of deep-sea jelly characters
- Unknown sea angel character (wearing sports jacket)
- Unknown ping pong tree sponge(?) character
- Unknown siphonophore(?) character
- Unknown predatory tunicate characters
Gear
Purchasing the Octo Expansion unlocks the 
Studio Octophones and the 
Octo Layered LS. As soon as the player enters the game and finish the Inkopolis Square News, a box containing both pieces of gear will be in the center of the Square.
Music
The full version of the Octo Expansion trailer song, called "Nasty Majesty" was performed during Off the Hook's live concert at NicoNico Choukaigi 2018[3]. On 21st May 2018, a new character was revealed. Her name is Dedf1sh and she is a Sanitized Octoling DJ. According to Nintendo, Dedf1sh was an DJ with a promising future in the music world. During her search for inspiration, she came across a deep-sea testing facility and became disinfected. Despite this, she kept up her career as a DJ, and her music will be heard all through the facility.
Gallery
Official art
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Logo from the trailer
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Vertical version of the preview art
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Agent 8 as she appears in the poster.
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Playable female Octoling with an Octobrush
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Playable male Octoling with a .52 Gal
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Concept art of Agent 8
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Concept art of Agent 8
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Inklings and playable Octolings trading competitive expressions
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Artwork on the expansion's download card.
Deepsea Metro
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Agent 8 viewing the Deepsea Metro subway map. She is holding the CQ Device in her hand.
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Interior view of the Deepsea Metro. Left to right: Iso Padre, Agent 8, pair of deep-sea jellyfish, C.Q. Cumber, blobfish, Cap'n Cuttlefish
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A zoomed-in view of the same shot reveals the dogfish character behind the blobfish.
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A subway car filled with the predatory tunicates.
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The ping-pong tree sponge and one of the gulper eels inside the subway.
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A car with the blobfish, two siphonophores, and a lantern fish.
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A platform in one of the Deepsea Metro stations. The Telephone can be seen on the right.
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Agent 8 looking towards the subway train.
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Agent 8 squatting in a Deepsea Metro station
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Promotional image of the Telephone
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The Telephone speaking to Agent 8. The text reads: If you have come here... ... You're trying to depart for the promised land, aren't you?!
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Promotional image of the CQ-80 Device and Card
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Challenge selection at the entrance to one of the stages. Entering the level costs 200 CQ points, and clearing it rewards the player with 700, 800 or 900 points, depending on the weapon set chosen.
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Smokestacks rising from one of the Deepsea Metro station, similar in appearance to underwater magma vents
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Promotional image of Agent 8 as a girl and a boy
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Promotional image of Off the Hook's new looks for the expansion.
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Longsnout dogfish, siphonophore, blobfish
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Sea angel, ping-pong tree sponge, deepsea jellies
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Predatory tunicates, gulper eels, flashlight fish
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Marina’s chat room.
Missions
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Agent 8 Fighting Sanitized Octocopters using the
Heavy Splatling
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Agent 8 Fighting Sanitized Octozeppelins using the
Inkjet
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Agent 8 firing an Inkjet.
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Agent 8 inside a mission
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Agent 8 standing in front of a mission entrance gate
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Agent 8 on a ride rail, wielding
Dualie Squelchers. Ink Switches can be seen in the background.
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Agent 8 being thrown at the checkpoint at the start of a mission.
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Agent 8 inside a mission. The objects floating in the background are Nintendo GameCubes with their controllers and discs.
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Agent 8 breaking some target crates with an
Octobrush. An octo-machine resembling cross between an Ink Piston and a Flooder can be seen on the left.
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Continue screen when failing a mission. The options are:
* (Lives x 3, CQ Points x 100) Revive from checkpoint
* Revive from station home
* Return to electric train -
The option at the bottom right shows Off the Hook's icons and reads "
Ask for help"
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"Mem Cakes", the tokens received for completing each of the expansion's 80 missions.
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Viewing the Inkling Squid Mem Cake.
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The same Mem Cake in Japanese. The description reads "Squid (6/80) - I was told these were once enemies we fought. Now we must join hands to get out of the deep sea."
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Agent 8 obtaining the
Jelfonzo Mem Cake after finishing mission F04/C05. The level's subtitle is a reference to the song Ice Ice Baby.
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The same situation in the Japanese version.
Playable Octolings
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Player Octolings wearing different gear
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Player Octolings wielding various weapons
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Teeth of a playable Octoling
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Octopus form (View full size)
Quotes
|
View the quotation page. |
Trivia
- The expansion costs $19.99* in the US, €19.99 in the EU, £17.99* in the UK and ¥1800* in Japan. It is the first paid downloadable content announced for any game in the Splatoon series.
Studio Octophones and 
Octo Layered LS were available early by pre-purchasing Octo Expansion. This is a throwback to the initial Splatoon Global Testfire, where players who pre-purchased Splatoon during the event were given 
Studio Headphones and 
a special squid-themed layered shirt.
