Mechassault

 is an action shooter game developed by Day 1 Studios and published by Microsoft Game Studios on November 11, 2002 in North America, on November 22, 2002 in Europe and on June 12, 2003 in Japan for the Microsoft Xbox. New mechs and maps were released through Xbox Live, but the content is no longer available with the discontinuation of Xbox Live support for the original Xbox on April 14, 2010.