This expansion box serves up intermdiate-level play, building off the recent, best-selling release of Battletech: A Game of Armored Combat. This new box set contains everything you need for more advanced 'Mech on 'Mech action. This expansion box serves up intermdiate-level play, building off the recent, best-selling release of Battletech: A Game of Armored Combat. This new box set contains everything you need for more advanced 'Mech on 'Mech action. along with five MechWarrior pilot cards and five Alpha Strike cards.