Site Notice
  • We have a limited coverage policy. Please check our coverage page to see which articles are allowed.
  • Please no leaked content less than one year old, or videos of leaks.
  • Content copied verbatim from other websites or wikis will be removed.


From NintendoWiki, your source on Nintendo information. By fans, for fans.
Jump to navigation Jump to search
Nintendo Letter Box logo.png
Developer(s): Nintendo SDD, Denyu-sha
Publisher(s): Nintendo
Platform: Nintendo 3DS
Category: Messaging, art
Players: Multiplayer
Predecessor: (None)
Successor: Nikki no Tabisuru Quiz, Swapdoodle
Release dates
N. America: December 22, 2011
Japan: December 21, 2011
Europe: December 22, 2011
Australia: (Unknown)
S. Korea: (Unknown)
China: (Unknown)

Swapnote, known in Europe as Nintendo Letter Box is free Nintendo 3DS software, and the first game in the Nikki series. In Japan, the name of the game translates to Unnoticed Exchange Diary possibly based on the expression 何時の間にか for something that arrives before one is aware of it, in this case messages and replies. It was succeeded by Swapdoodle and Nikki no Tabisuru Quiz.


It allows the player to create messages and drawings via StreetPass. The software once supported SpotPass with Nintendo 3DS users on the player's Friend List, but support for SpotPass was terminated on October 31, 2013 due to exploitation of the system.

3DS logo.png

Template:Nikki series