 Critical response to 21st Century Breakdown was generally positive . The record achieved Green Day 's best chart performance to date , reaching number one on the album charts of various countries , including the United States Billboard 200 , the European Top 100 Albums , and the United Kingdom Albums Chart . It was awarded the Grammy Award for Best Rock Album at the 52nd Grammy Awards held on January 31 , 2010 . As of December 2010 , 21st Century Breakdown has sold 1 @,@ 005 @,@ 000 copies in the United States and more than 4 million worldwide . 
