The SC2_Zerg_Mutalisk_Trailer.wmv file you have requested: Media / Videos and Trailers / Official Videos / Starcraft II 'Zerg Mutalisk' Trailer - 3.16mb is not available. Perhaps try browsing all files for the game StarCraft II: Wings of Liberty and upload any files you want to share or are missing. This is the only information we could locate:
StarCraft II will feature the return of the Protoss, Terran, and Zerg races, overhauled and re-imagined with Blizzard's approach to game balance, designed to be the ultimate competitive RTS game. A trailer featuring a half minute of footage from Starcraft II.