R20 Rockman & Rockman X Official Complete Works

R20 Rockman & Rockman X Official Complete Works (R20 ロックマン＆ロックマンＸ オフィシャルコンプリートワークス) is a illustration book with 336 pages in A4 format containing images and informations of over 40 games from the Mega Man and Mega Man X series, that was released on March 25, 2008 in Japan for 3,360 Yen and in December 2009 as two separate books in North America: Mega Man Official Complete Works and Mega Man X Official Complete Works. The "R20" from the name refers to Rockman's 20th anniversary, which happened on December 2007.

Content
The book shows concept artwork from all of the main series' games, shown in order of game release; starting with the original MegaMan through MegaMan Powered Up.