Below is a listing of various easter eggs within the game.

Compass-chan Surprise

Within an older version of the game, a scene consisting of dancing compass fairies appears when the player extends the flash object at the ship drop screen, and then clicks on the upper left third of the black area (the cursor will change to a hand). It seems to have been removed during December 2014.

Non-functional repair cancellation dialog

The "cancel repair" dialog is a function that is likely removed from the game. After placing ships in the repair dock, stretch the game window horizontally until there's a significant amount of wide black space on the left and right sides. Clicking on the space on the left will display the dialog, which does not actually cancel anything if "yes" is selected. Note that selecting "yes" also causes various bugs to occur.

Clicking the black space once again (by cancelling the window for the first time and clicking on the black space again) will sometimes show a random ship that is currently in your possession instead of an "undefined" ship (it can even show a ship that is currently going on an expedition).

Bug bouncing in the visual gallery

The fairy (with the books on her head) in the gallery also has a bug on top. If you click on the fairy, the bug will bounce, and sometimes fly away. There has been a mini-game where some people see how many times they can click on the bug before it flies off (record on the Japanese Wiki seems to be 78 times).

Jumping Construction Girl 

This common Easter egg only happens when you begin constructing a Ship girl, and click on the construction girl with a ponytail carrying boxes.

Gotland Minigame

In the Inventory, it is possbile to trigger a special minigame.

Unimplemented features

By taking apart the game client and its API, one can discover features that are unimplemented or have been canceled.

Unused ship and equipment types
Ship types
  1. API-15: Transport Ships/Supply Ships (AP / 輸送艦)
    • While they are not implemented as a ship for player use, they do exist in the game as the Transport Ship Wa-Class.
    • Historically, Mamiya and Irako are classified as supply ships.
  2. API-12: Super Dreadnought (XBB / 超弩級戦艦)
    • Historically, all battleships in the game are classified as super dreadnoughts but Gangut and Conte di Cavour.
Equipment types
  1. VT fuse (VT信管),
  2. Jet-powered Fighter,
  3. Jet-powered Attacker,
  4. Jet-powered Reconnaissance Aircraft.
Unimplemented items
  • Development material box (開発資材箱) (small/medium/large)
  • Treasure chest (宝箱) (small/medium/large)
  • Return directive/order (帰還命令書, 帰還司令書)
  • Challenge (挑戦状)
  • Trap detector (罠探知機, 罠探知機・改)
  • Danger detector (危険探知機, 危険探知機・改)
  • Excavator (掘削機, 掘削機・改, 深海掘削機)
  • Clover (よつばのクローバー, 黄金のクローバー) (4 leaf/golden)
  • Compass (高価な羅針盤, 伝説の羅針盤) (expensive/legendary)
  • Blue searchlight (青い探照灯)
  • Mast (銅のマスト, 銀のマスト, 黄金のマスト) (copper/silver/golden)
Equipment category selection screen at development screen
In-game message sprites
離脱成功 (Withdrawal success) is what is currently shown on the top left hand corner of the screen when the player is prompted with the choice of continuing into night battle, with 100% chance of success (in smaller print).
The existence of the 離脱失敗 (Withdrawal fail) message might indicate some form of forced night battle being considered at some point.
The 敵艦隊に逃げられた (Enemy vessel fled) message indicates that some kind of mechanism disallowing players from entering the night battle phase might have been considered before.
敵直援戦闘機が妨害 (Obstruction by enemy interceptor aircraft) is a message found together with other statuses for abyssal fleets in the fighter combat stage.
Messaging system
Sortie node events
When reaching a node, certain events can occur:
  1. Whirlpool: 司令官!うずしおが発生しました!
  2. Huge wave: きゃーっ!! 高波が発生しました!
  3. Bad weather:
    1. 悪天候でこれ以上は進めません。 帰還しましょう! (We can't advance because of the bad weather, let's go home!)
    2. 前方に悪天候が発生していますね。 迂回して進むことにしましょう! (We see bad weather before us. Let's take a detour!)
  4. Octopus: おや…大きなタコさんが何かを持ってきましたよ! (Oh, a big octopus is carrying something!)
In the KanColle RPG (a TRPG edition of the game) bad weather is preserved and can be avoided with sonar.
Unused fairies

Never Released Furniture

Some pieces of furniture that were added to the API, but never added to the game.

250px

ID: 昭和レトロな壁紙
Showa Retro Wallpaper
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 大正ロマンな壁紙
Taisho Romantic Wallpaper
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 爽やかポップな壁紙
Refreshing Pop Wallpaper
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 可憐な壁紙
Lovely Wallpaper
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: ブルードットな壁紙
Blue Dot Wallpaper
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 粋な壁紙
Stylish Wallpaper
Rarity:
☆☆☆☆☆☆☆
Price:
N/A 粋な壁紙
Stylish Wallpaper
Released the: ?
Availability: Never released

250px

ID: 明るいウッドタイルの床
Light Wood Tile Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 黒いタイルの床
Black Tile Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 青の小花柄のカーペット
Blue Floral Pattern Carpet
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 茶色の小花柄のカーペット
Brown Floral Pattern Carpet
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 紫の小花柄のカーペット
Purple Floral Pattern Carpet
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: モダンな床
Modern Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: エスニックなマット
Ethnic Mat
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: フェミニンなマット
Feminine Mat
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 緑の北欧風カーペット
Green Scandinavian-style Carpet
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 真っ白の床
Pure White Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 真っ黒の床
Pure Black Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 真っ赤な床
Crimson Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 朱色の床
Vermilion Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 真っ青な床
Deep Blue Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 緑の床
Green Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 黄緑の床
Lime Green Floor
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 合宿セット・布団
Training Camp Set: Futon
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 鮮やかな畳
Vivid Green Tatami
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: おさがりの机
Second-hand Desk
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: ダンディな机
Dandy Desk
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: ナチュラルな椅子
Natural Chair
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: モダンなテーブル
Modern Table
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: おいしそうなスツール
Delicious Looking Stool
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 小さなウッドベージュの椅子
Small Wooden Beige Chair
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

 

ID: 194 フェミニンガラステーブル
Feminine Glass Table
Rarity:
☆☆☆☆☆☆☆
Price:
N/A ピンクが主張しすぎないシンプルでフェミニンなガラステーブル
A simple and feminine glass table with a subtle pink color.
Released the: ?
Availability: Never released
Notes: Same asset as the "Glass Table" in the API

250px

ID: モダンな小窓
Modern Small Window
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: フレーム付地図
Framed Map
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: シンプルな観葉植物
Simple Houseplant
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 女の子のポスター
Girl Poster
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 昔ながらの箪笥
Old-fashioned Chest Of Drawers
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 照れ屋なお面
Shy Mask
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 泣き虫だるま
Crybaby Daruma
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released

250px

ID: 新生だるま
New Born Daruma
Rarity:
☆☆☆☆☆☆☆
Price:
N/A
'
Released the: ?
Availability: Never released