: Modern versions of these games generally do not use traditional standalone license keys. Instead, they are tied directly to your Battle.net account upon purchase.
Blizzard published official support articles about license keys, e.g.: license key starcraft
For nearly two decades, a 13-digit or 26-digit CD key was your only gateway to the Koprulu Sector. Historically, these keys were printed on stickers inside physical game boxes or on manual covers. Today, while physical copies still exist as collectibles, the "license key" is primarily a digital product key used to unlock content within the Battle.net ecosystem. Do You Need a Key? Free-to-Play vs. Paid Content : Modern versions of these games generally do