hey this is JHawk88 and i am going to be making a halo 3 machinima and i need people. send me a message to Hawksters03 for more information. thanks and if you have recon that would help.
Seriously, dude. Just wait for it to come out on the XBL Marketplace. You might actually get a better deal than I got, considering I had to pay $80 for the Limited Edition Halo Wars.
Then again, I did pay for it with the money I got from selling my games at the same Gamestop I got Halo Wars at...
Hate to burst your bubble, but that won't happen. You can't get the Mythic Map Pack in Halo 3 without winning the code from Rooster Teeth (which probably didn't happen), getting the Limited Edition Halo Wars, or just buying it when it comes out on the XBL Marketplace.