To celebrate the first year of Destiny 2 being available on PC, Blizzard is allowing fans to redeem the base game on Battle.net for free for a limited time.
The PC version of Destiny 2, which is available on Blizzard’s Battle.net service, will be available as a Gift from November 2 through November 18.
Source: IGN.com Destiny 2 on PC Available as Free Gift This Month