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,R20 Rockman & Rockman X Official Complete Works?) 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.
On December 2012, Rockman's 25th anniversary, Capcom released a new version of the book titled R20+5 Rockman & Rockman X Official Complete Works with additional pages. New content include artwork from the games Mega Man 9 and Mega Man 10, and new illustrations by several artists, such as Hitoshi Ariga, Iwamoto Yoshihiro and Haruki Suetsugu.