2010 marked the band’s 10th anniversary. To celebrate, Nightmare held

2010 marked the band’s 10th anniversary. To celebrate, Nightmare held a New Year’s Eve Countdown show at Zepp Sendai and released Gianizm the next day. This was followed by their first performance at Saitama Super Arena on January 9. The show was called Nightmare 10th Anniversary Special Act. Vol.1 [Gianizm] and the set list contained 27 songs, including all of the songs on the new album. The promotional tour Request of Gianizm the Tour began in April and on June 23, they released their 21st single, A:Fantasia. As part of their celebrations, they toured several times. In July, they began the Nightmare 10th Anniversary Special Act. Vol.2: Re:Start of Tell(All)ism tour, beginning in Saitama and ending in Sendai . The final show of the tour was held at Nippon Budokan , marking their third time at the prestigious venue. In between Vol. 2 and Vol. 3 of the tour, they released another best-of album titled Historical ~The Highest Nightmare~ , with several re-recorded tracks and one new song. The last part of the tour was titled Nightmare 10th Anniversary Special Act. Vol.3 Historical ~The Highest Nightmare~. They performed at Makuhari Messe for the first time on December 25.