Install the app and log in or create a free Blizzard account.
To download the game and check your expansion access, follow these steps from wikiHow and Battle.net: descargar+starcraft+ii+heart+of+the+swarm+para+pc+free
En el momento de la transición al modelo gratuito, Blizzard regaló Heart of the Swarm a los jugadores veteranos. Install the app and log in or create a free Blizzard account