Universal Studios | The Church of Jesus Christ of Latter-day Saints | Green Day | One Day International | New Year's Day | Boxing Day | Memorial Day | Seventh-day Adventist Church | Labor Day | Doris Day | Earth Day | May Day | Abbey Road Studios | Sandra Day O'Connor | Valentine's Day | Record Store Day | Mother's Day | Ferris Bueller's Day Off | Bastille Day | Six-Day War | Ealing Studios | April Fools' Day | Australia Day | Father's Day | Brightest Day | Big Day Out | Macy's Thanksgiving Day Parade | Canada Day | Victory in Europe Day | Pinewood Studios |
Developed by Day 1 Studios and published by Microsoft, MechAssault was initiated when Denny Thorley of Day 1 Studios approached Jon Kimmich of Microsoft about developing an original BattleTech game built from the ground up to support console play.