The full first chapter of the single-player story is entirely free.
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. skachat kliuch k starcraft 2
You can access the ranked ladder for free after earning "10 First Wins of the Day" in Unranked or Versus AI matches. The full first chapter of the single-player story
Since 2017, Blizzard Entertainment has made a significant portion of the game accessible without any purchase or product key: You can access the ranked ladder for free
While the base game is free, certain single-player expansions and cosmetic items still require a purchase through the official Battle.net Shop : StarCraft II
Below is an overview of what is currently free and where you can safely get the game. What is Free in StarCraft 2?