Battlecruiser Millenium XP1 features elements and content previously created for the Earth Force Command add-on which is now part of BCM:XP. Primarily the focus is on some new units, new scenarios and a full blown detailed city created specifically for the ACM scenario with support for multiplayer. Other new units include stations, planetary starbases, character models, player controled naval units (subs etc) and more first person firearms including timed explosives, trip mines etc This volume also features a new galaxy (approx 100 planets and moons) linked to the existing BCM galaxy via wormholes in various areas. Along with the new planets and moons come thousands of new mission zones. New content includes new images for the crew and pilots of all alien nations (BCM currently only supports Terran images) as well as new character models with streamlined animations. New careers include Station Commander, Starbase Commander and Naval Commander. Both of which allow you to control the assets of stations and starbases along with the ability to use any of those assets as your own. Several BCM wishlist features which were dropped will also be featured.