Additional information on StarCraft II content and official requirements: Official Shop System Requirements Free vs Paid Content Official Blizzard Store Nova Covert Ops Bundle page on Battle.net
: All Commanders are playable, but most are capped at Level 5 unless purchased. (Raynor, Kerrigan, and Artanis are completely free). : Thousands of community-made maps and games. Starcraft 2 Nova Covert Ops Free Download
While the base StarCraft II game and its first campaign, Wings of Liberty , are free to play, the Nova Covert Ops mission packs are paid DLC and are not available for free download through official channels. Blizzard Entertainment Nova Covert Ops Additional information on StarCraft II content and official
Alternatively, individual mission packs are sometimes available for separate purchase. Unlock the Campaign Wings of Liberty