Octo Expansion

Octo Expansion is paid downloadable content for Splatoon 2 that is scheduled to be released Summer 2018.

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. 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 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 set of three floating pieces of a post that must be covered in ink to be activated and be touched in order for the level to be completed which the level will say "TEST PASSED!" similar to the function of the Zapfishes. There are also smaller posts that emit red beacons that function the same to Mini Zapfish.

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 spongeundefined character
 * Unknown siphonophoreundefined character
 * Unknown predatory tunicate characters

Gear
Purchasing the Octo Expansion unlocks the and the. 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. 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.

Stations
Line A

Line B

Line C

Line D

Line E

Line F

Line G

Line H


 * Slow Ride Station
 * Swass-8 Ball Station
 * Ciretami Yama River Station
 * Hypercolor Station
 * Rainmaker Challenge
 * Fail Balloon Challenge
 * Rotating Stage Challenge
 * Inkrail Grind Challenge
 * Rotating Platform Challenge
 * 8-Ball Inkfurler Challenge

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.
 * and were available early by pre-purchasing Octo Expansion. This is a throwback to the initial Splatoon Global Testfire, where players who pre-purchased  during the event were given  and  a special squid-themed layered shirt.