All Co-op Commanders are playable for free. However, most are capped at level 5 unless purchased, except for Raynor, Kerrigan, and Artanis, who are completely free.
The full first chapter of the single-player story is entirely free.
Searching for a "key for StarCraft 2 " ( skachat kliuch k starcraft 2 ) is largely unnecessary today because . Many sites offering "free keys" or "key generators" are often fraudulent and may contain malware [Expert Consensus].
All community-made custom games and maps are free to play. What Still Requires Purchase?
You can access the ranked ladder for free after earning "10 First Wins of the Day" in Unranked or Versus AI matches.