Do I have to install and launch the game once to keep it my library forever ?On November 14, 2017, large parts of StarCraft II's single-player and multiplayer modes will become accessible for free (See Below). It’s never been a better time to begin your StarCraft II story.
StarCraft II
Wings of Liberty Campaign
The award-winning StarCraft II: Wings of Liberty story campaign is free in its entirety. If you already own WoL you get second installment Heart of the Swarm, for free. Make sure to log in between November 8 and December 8 to claim it.
Versus Mode
Access Unranked and Versus AI for free; unlock Ranked with 10 first wins of the day in Unranked or Versus AI.
Commanders up to Level 5
Kerrigan, Raynor, and Artanis are completely free, and all other Commanders are free up to level 5.
WoL is free hereafter. If you already have WoL owned before, then you can get HotS for free until December 8. For that you need to login to the game to claim is what it says. I don't know exactly the specifics for that scenario as I already have the games.Do I have to install and launch the game once to keep it my library forever ?