Easter Eggs

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

Compass-chan Surprise
When you get a ship drop, extend the window and click on the upper left third of the black area (the cursor will change to a hand) to get the COMPASS-CHAN CLASSICAL DANCE PARTY.

It seems to have been removed during December.

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.

Reclicking the black space again (by cancelling the window for the first time and clicking on the black space again) will sometimes show not an "undefined" ship but also a random ship that is currently in your possession (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 Contruction Girl
This common easter egg only happens when you begin constructing a Ship girl, and clicking on that particular contruction girl with a ponytail carrying boxes.

Unimplemented features
By taking apart the flash game client, one can discover features that are unimplemented, or have been cancelled.
 * Not used ship and equipment classes
 * 1) 海防艦 (Escort ship)
 * 2) *Same repair time as submarines and less build time.
 * 3) *Similar to DD but can't use torpedos.
 * 4) 補給艦 (Supply ship)
 * 5) *Same repair time as submarines and less build time.
 * 6) 超弩級戦艦 (Super dreadnought)
 * 7) *Similar to BB.
 * 8) VT信管 (VT fuse)
 * 9) *Usable by everything except submarines.