April Fools events

Like most music games, SEGA's music games also have April Fools events each year around April 1st.

In 2020, due to w:COVID-19, April Fools events for all games were postponed indefinitely.

maimai

• 2013: セガサターン起動音 (NOT [H.][Remix]), playable on development cabs in SEGA only
• 2014: Site changed to "The world of three kingdoms"; 犬日和。 sung by はっぴー (4/1 only) [1]
  • Revived in 2019 as 犬日和。(はっぴー歌唱Ver)
• 2015: 全世界共通リズム感テスト (4/1 only) [2]
  • Expert and Master charts revived in 2019
• 2016: Wonderland Wars オープニング (4/1~4/7) [3]
  • Revived in 2019
• 2017: Garakuta Doll Play ガラクタ総選挙, 犬日和。 宴 星 (3/31~4/6) [4]
  • GDP No.1 and 犬日和。 revived on 2017/06/22 (MURASAKi+ release date)
  • GDP No.2~No.5 Revived in 2019
• 2018: 疾走あんさんぶる 宴 協, ミラクル・ショッピング 宴 蛸 (4/1~4/8) [5]
  • Playable normally since 2018/05/08
• 2019: 怒槌～光吉猛修一部謎～ 宴 宴 plus aforementioned revivals as 宴 attribute charts (4/1~) [6]
• 2020: Site changed to "maimai でらっくす TSUKEMEN"; 六厘歌 (postponed) [7] [8]

CHUNITHM

All April Fool WE charts were revived in subsequent years.

• 2016: Help me, あーりん！ (4/1~4/6) [9]
  • Playable as イロドリミドリ Crazy Set Track 3 outside of April Fools
• 2017: あねぺったん (3/31~4/5) [10]
• 2018: イロドリミドリ杯花映塚全一決定戦公式テーマソング『ウソテイ』 (4/1~4/4) [11]
• 2019: なるがちゃんなぎにいよいよえれー目にあわされる話 (4/1~4/10) [12]
• 2020: 【3Dサウンド】小野ちゃんが真夏のビーチでスイカを叩き割る話【イヤホン推奨】 (postponed) [13]

ONGEKI

• 2019: [14], [15] (4/1(月)7：00～4/10(水)23：59)
• 2020: (postponed)[16], [17]