Koei Wiki
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Koei has performed various third-party collaborations with their products. Consumers can often participate in them by inputing registration codes with a related product. These registration codes can be inputted online through a personal computer or mobile phones to unlock various bonuses for a game. Usually, these codes can be inputted with a Mobile Joy like method. These bonuses are exclusive to Japan.

This list will also strive to include other miscellaneous third party media that don't employ inputting a code into a cell phone. It will also combine expansions packs and spin-offs with its parent title.

General Collaborations[]

Nobunaga's Ambition[]

Nobunaga no Yabou Tendou[]

Nobunaga no Yabou Sphere of Influence[]

  • CG graphics from this game shall appear in the 2016 Taiga drama Sanadamaru. The Sengoku Risshiden expansion shall include an event dedicated to the drama.

Nobunaga no Yabou Online[]

Romance of the Three Kingdoms[]

Romance of the Three Kingdoms XI[]

Sangokushi Online[]

  • Special collaboration with Yahoo!Japan's Sangokushi Tokushu II presentation. Players could obtain Wakaba's trademark mantle in this game.
  • Serial codes with Souten no Kouro first volume DVD purchase could unlock bonus content related to anime, such as Cao Cao's punishment club, his trademark line, a wall screen, and the Cao Cao demon figurine.
  • Serial codes found on ticket purchase for Red Cliff Part II could unlock a bonus wall screen and a cloak modeled after Zhuge Liang's bird Sangokushi Online

Uncharted Waters[]

Uncharted Waters Online[]

Ishin no Arashi[]

Ishin no Arashi: Shippuu Ryomaden[]

Dynasty Warriors[]

Any image song in the series:

Dynasty Warriors Online[]

  • Various netcafe campaigns
  • Every Net Entertainment Festa event
  • Serial codes found on ticket purchase for Red Cliff Part II could unlocks equipment found in the movie.
  • Samurai Cats collaboration
  • Road to Dragons collaboration

Dynasty Warriors 6[]

  • Serial codes with Souten no Kouro first volume DVD purchase could unlock bonus edit character parts for the Souten no Kouro Cao Cao and Liu Bei in the Empires spin-off
  • Special scenarios and items various video game magazine publications in both titles
  • Serial codes with Shigekix purchase unlocks exclusive items for characters' usage

Dynasty Warriors 7[]

Samurai Warriors[]

Any image song in the series:

Samurai Warriors 3[]

Samurai Warriors 4[]

Fist of the North Star: Ken's Rage[]

Neoromance[]

  • Any B's Log or Lala collaborations
  • Any musicals or theatrical productions

Harukanaru Toki no Naka de[]

Harukanaru Toki no Naka de 3[]

  • Sanrio collaboration for Hello Kitty figurines of the Hachiyou.

Kiniro no Corda[]

Kiniro no Corda 3[]

  • Tie-in with Yamaha's Silent Violins. Used by two of the game's characters, Chiaki Tohgane and Housei Toki.
  • pivix and B's Log Bunko illustration and short story contest.

Zill O'll[]

TRINITY: Souls of Zill O'll[]

  • Serial code with Dream's single, Hands Up!, to obtain rare items by registering code into game. Also the group's image songs for the game's ending credits and commercials
  • Nico Nico Seiga fanart contest

Winning Post[]

Winning Post 8[]

100man-nin no Winning Post[]

  • Guntama crossover event

Pop Cutie! Street Fashion Simulation[]

See Also[]

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