2017

January

 * A final demo for Nioh will be made available from January 21 to 22. Clearing it earns the player a new helmet for the completed game.
 * Shin Sangoku Musou Online Z has released an update where players can fight Dynasty Warriors 8 Zhao Yun and wield Ding Feng's circle blade. A new synthesis function is included to further upgrade weapons.
 * The 2017 edition of Winning Post 8 has been revealed.
 * According to a press conference by Nintendo, Koei will be releasing several titles for the Switch console. One of them is a new Warriors game based on the Fire Emblem series.
 * Starting on January 10, LINE will be releasing 40 different stamps of characters from Nobunaga's Ambition.
 * The beta for Dynasty Warriors: Unleashed was released on January 12, 2017. Participants could pre-register before January 11 to test the game on Android phones.
 * Koei is holding a survey to determine which three characters from Dynasty Warriors 8 will be made the focus of future merchandise. The poll lasts until January 6, 2017 and only Gamecity members can vote.
 * A Twitter account for Omega Force has been made to commemorate the development team's 20th anniversary.
 * Shin Sangoku Musou SLASH will be terminating its services on January 23, 2017.

February

 * Atsushi Watanabe's Game Office Exploration series has led to a visit to Koei's headquarters. During his trip, he has a spontaneous meeting with Kou Shibusawa.
 * Shin Sangoku Musou Online Z has begun a new update where players can acquire Sima Shi and Guo Huai's weapons. Butler and waitress costumes are also available for player avatars.
 * In celebration of the release of Haruka 3 Ultimate, Ruby Party has uploaded the two animated OVAs and the comic short based on this entry for free. They're available for public viewing until March 31. Kurenai no Tsuki is the first part; Owarinaki Unmei is the second part.
 * Kazuhiko Inoue (Kagetoki) and Naozumi Takahashi (Hinoe) will also celebrate the game's release with a live stream February 22.
 * Celebrate the upcoming Sangokushi 13 with Power Up Kit with a Valentine's Day livestream. The event will be emceed by Saki Suzuki while guests include historian idol Eri Kohinata.
 * To commemorate the release of Sangokushi 13 with Power Up Kit, players will be able to spend half the price for online points used in Sangokushi 12 Taisenban until March 1.
 * Nobunaga no Yabou Souzou with Power Up Kit will be available for the Nintendo Switch on March 3, the same date as the Sangokushi 13 with Power Up Kit Switch port.
 * LINE has released 40 different stamps of characters from Romance of the Three Kingdoms.
 * Steam is hosting a Koei-Tecmo publisher sale until February 13.
 * Nobunaga no Yabou Online is holding its annual Valentine's Day event from February 1 to 15. Players can give chocolate sugar to their favorite officer for the chance to receive rare items.
 * Starting on February 15, the game will be celebrating Japan's Cat Day (February 22) with a special event.
 * Uncharted Waters Online has begun its Age of Reason campaign in Japan.
 * A special campaign for Valentine's Day will be held from February 7 to 21.
 * The collaboration with the comic Kaioh no Dante continues into its second phase this month. This event is a request from the English navy to capture Dante.
 * As part of their plan to promote the Romance of the Three Kingdoms series, Koei is seeking two individuals to serve as PR ambassadors for the IP. Those chosen will be given the privilege of traveling to historic sites like Chibi from March 11 to 15 under the supervision of Professor Yoshihiro Watanabe, the executive director of Waseda University's Sangokushi Association. Entries are limited to Japanese residents and have already ended on February 6.
 * A party featuring the cast of the third Kiniro no Corda Blue♪Sky play will be taking place on February 5, 2017. Guests may choose to come for the matinee (lunch) or soiree (dinner).
 * A stage production of the Dynasty Warriors series is showing February 11~19, 2017. The venue will take place at the Zenrosai Hall in Shibuya.
 * Koei has trademarked the following titles: Nyangokushi and Wangokushi.
 * Marui One is hosting a Neoromance merchandise fair February 15~28.

March

 * March 30 is Nobunaga's Ambition Day. Players can receive various gifts if they log-in to one of the celebrating Nobunaga's Ambition titles.
 * 100man-nin no Winning Post will be undergoing its third revival. To celebrate this and make predictions for the GI Osaka Hai race, Koei is hosting a livestream on March 31. Horse racing critic Takao Suda and horse-racing talent Maaya Morinaga will appear as special guests.
 * Winning Post 8 2017 is available to purchase March 2. Members of the horse racing site netkaiba can register their account to obtain Takao Suda in their game; premium members of the same site can gain additional collaboration bonuses. Players of this game or the series's social game can participate in a Kou Shibusawa 35th anniversary Twitter giveaway.
 * Producer Ryota Aomi and director Tomohiko Sho will demonstrate Dragon Quest Heroes I - II for a live stream on March 1. They will highlight the new additions being put into the Nintendo Switch port.
 * Nobunaga no Yabou Souzou with Power Up Kit will be available for the Nintendo Switch on March 3, the same date as the Sangokushi 13 with Power Up Kit Switch port.
 * To commemorate the release of Sangokushi 13 with Power Up Kit, players will be able to spend half the price for online points used in Sangokushi 12 Taisenban until March 1.
 * To celebrate thirty-five years of the Kou Shibusawa brand, DDT Pro-Wrestling will include a Nobunaga no Yabou Oretachi no Sengoku themed match during their twenty year anniversary tournament. The match will take place on March 20.
 * GALLERIA created specific PC builds for Nobunaga no Yabou Online Yuushi no Shou, Daikoukai Jidai Online Age of Revolution, and Shin Sangoku Musou Online Z. Consumers who purchase these builds will receive bonus items like play tickets for a month of play and or serial codes for items their player character can use in the game.
 * Shin Sangoku Musou Online Z has announced their twelfth Jin-Wu Conflict and their White Day campaign.
 * The latest update allows players to acquire Dynasty Warriors 8 Xu Zhu's weapon.
 * A collaboration event with Musou ☆ Stars is being held until April 20. Players will be able to obtain furniture based on the original characters from the game.
 * Nobunaga no Yabou Online is hosting a Hideyoshi themed player challenge for the routine Mononofu Toubatsu-roku event on March 1.
 * A collaboration event with the Toukiden series will be held from March 22 to April 12.
 * This game along with Nobunaga no Yabou 201X will be holding a collaboration event with the manga series Oda Cinnamon Nobunaga.
 * Uncharted Waters Online is continuing its collaboration with the comic Kaioh no Dante. This event is a request from the English navy to capture Dante.
 * The twelfth anniversary events and celebrations shall take place March 7~21. Players can build up "Thanksgiving Points" to exchange for exclusive anniversary items.
 * A new chapter featuring Atlantis has been released.
 * PlayStation users can be eligible for the Japanese PS Plus campaign this month.
 * In celebration of the release of Haruka 3 Ultimate, Ruby Party has uploaded the two animated OVAs and the comic short based on this entry for free. They are available for public viewing until March 31. Kurenai no Tsuki is the first part; Owarinaki Unmei is the second part.
 * An orchestral concert based on this game and Harukanaru Toki no Naka de 6 will be held on June 3 at the Ichikawa City Cultural Hall.
 * A new Neo Angelique game that doubles as an Otomate collaboration is the last upcoming Neoromance project announced on stage last year and this year receive new coverage this year. More information is scheduled to be announced to the public at the Neo Angelique Party March 26, 2017.

April

 * Winning Post 8 2017's simulation of this year's Oka Sho has been posted on Twitter shortly after the race.
 * Shintaro Kobayashi, senior director of Koei-Tecmo, has announced his retirement for June this year. Other senior managers have announced their retirement at the same time. Changes for the subsidiaries will occur on April 1.
 * Another announcement made on March 13 was the establishment of midas.
 * Projections for company performance has declined 7.3% due to non-profit operations and loss exceeding earlier expectations. The reasons were cited due to project delays and a decrease in sales for products in early March 2017.
 * The PS Vita port of Sangokushi 13 with Power Up Kit will hit Japan and Taiwan's stores on May 25. This port will include touchscreen features for gameplay, a camera function for original characters, and cross-saving with the PS3 and PS4 ports.
 * Nobunaga no Yabou Online Yuushi no Shou is hosting a Toukiden collaboration event until April 12.
 * This game along with Nobunaga no Yabou 201X is also having collaborations with the comic series Oda Cinnamon Nobunaga.
 * April 11 is "Mononofu Day". Players can log-in to receive special bonuses for this day. The day after will be launch day for the second season update.
 * Daikoku Jidai Online Age of Revolution's April event schedule has been posted online. The first live event will be the annual Easter egg hunt which will start on April 4.
 * Shin Sangoku Musou Online Z is holding a Musou ☆ Stars collaboration event until April 20. Players will be able to obtain furniture based on the original characters from the game.
 * Another update called Spring Impact 2017 was announced this month. The fifteenth Jin-Wu Conflict is later this month with prizes being given to the top players.
 * Koei-Tecmo has filed a trademark for Seiken Musou. Currently, it's unknown if this is a new original Warriors IP or a potential collaboration title with Square Enix's Seiken Densetsu series or Warner Brother's King Arthur.
 * Pachinko maker EXCITE has announced their pachislot Nobunaga no Yabou Souzou -Z- for their 2017 lineup. It will be in pachinko parlors by April 2017.