If you were planning on tossing Microsoft's upcoming supercop sim shortly after using the included Halo 3 Beta key, you'd best restrain your throwing arm. Shizzle Games has posted an image of Crackdown's included invite card -- it clearly lays out that the Halo 3 Beta code is both downloaded and launched via the game's main menu. With no dashboard option, you'll have to keep your Crackdown disc for as long as you want to take part in Bungie's practice run.
Luckily, Crackdown's recent Xbox Live demo has greatly weakened the game's early reputation for being Master Chief's ball-and-chain.