What happens to Battle.net game library when the owner dies

Open a ticket with Blizzard Support and request handling of a deceased account holder's account, referencing the "Updating the Battle.net Account Holder Name" support article. If you cannot log in -- the usual situation for a survivor -- Blizzard publishes a no-login route: go to the Battle.net Login page, click "Can't Log In", pick the appropriate category, enter an email if prompted, and click "Contact Customer Support". Blizzard requires supporting documentation, such as a death certificate, and reviews each request case by case. Blizzard publishes no support phone number, support email, or estates mailing address; the ticket system is the only intake. It is not an automatic process and the outcome is at Blizzard's discretion.

Blizzard asks for supporting documentation such as a death certificate, along with information identifying the account (the holder's email or login on file). Death certificates appear on Blizzard's published list of accepted documents. Bring documentation of your legal standing to act for the estate, such as Letters Testamentary or Letters of Administration -- Blizzard does not name that, but a custodian will normally want it. Blizzard's guidance is to submit a recognizable copy showing first and last name, address, date of birth, and the name of the issuing government body, with everything else physically covered. It states it uses the copy only to verify account ownership or a change of personal data and deletes it once the ticket is resolved.

There is no published route to it. Blizzard's EULA states Battle.net Balance "is non-transferable to another person or Account, does not accrue interest, is not insured by the Federal Deposit Insurance Corporation (FDIC), and, unless otherwise required by law or permitted by this Agreement, is not redeemable or refundable for any sum of money, monetary value, or anything of value, from Blizzard at any time." Blizzard documents no process for cashing a deceased holder's balance out to an estate. An estate can still ask -- the request costs nothing and Blizzard decides at its discretion -- but should treat any remaining balance as forfeited rather than counting on it.

Yes, and this is the one transfer Blizzard's own terms allow. The End User License Agreement permits a person who bought a game from a retailer on original media -- CD-ROM, DVD -- to permanently transfer all rights and obligations for that game to another person who agrees to the agreement, by physically transferring the original media, original packaging, and all manuals and documentation, and deleting every copy and installation in their own possession. Digital purchases carry no equivalent right: outside that original-media route, Blizzard states it does not recognize any purported transfer of the Games.

No. In-game currency (such as World of Warcraft gold), characters, and items are tied to the licensed account and, under Blizzard's terms, are not owned property and are not separately transferable or redeemable for money. The EULA lists virtual goods among the things forfeited on termination. Characters cannot be moved between Battle.net accounts at all; paid character transfers work only between World of Warcraft accounts sitting under the same Battle.net account. If a relative is granted access to the account through Blizzard's discretionary process, they can continue using the characters and items in-game, but there is no mechanism to convert them to cash for the estate.