Released as an add-on for the iPhone version and a standalone application on Facebook, Bejeweled Blitz requires players to gain as high a score as possible within one minute. Exclusive to this mode are multipliers and extra special gems. Special gems left over at the end are activated for bonus points. Score results from this mode can be uploaded to Facebook.
Source: Wikipedia, "Bejeweled 2", available under the CC-BY-SA License.