Hello! Project Wiki

Mega Best were CD+DVD albums released to commemorate Hello! Project's 10th anniversary. The various albums in the series were all released on December 10, 2008 on the zetima label.

The Hello! Project 10th Anniversary DATA BOOK 2009 was presented to applicants who bought all eight titles as a bonus. Though they were all originally planned to be shipped in early April 2009, significant time was required for editing, so they were sent out in December of the same year. 

TV commercials were run for the Mega Best series, but commercials for Abe Natsumi's mega best were also run separately.