Buying and Redeeming Battle.net Game Keys

Buying a Blizzard game usually means buying a Battle.net key: a code redeemed through Blizzard's client that attaches a license for a specific title to your account. Understanding how that redemption works — and what it does and doesn't include — makes it easier to know what you're actually paying for.

What redeeming a key does

When you redeem a Battle.net key, the license for that game is added permanently to your Battle.net account rather than to the specific device you redeemed it on. That means you can install the game on a different computer later and it will still be there, as long as you sign in with the same account. It's the account, not the machine or the disc, that the license is tied to.

Account-bound libraries, in practice

Because ownership lives on the account, your whole Blizzard library travels with you. Reinstalling Battle.net on a new PC and logging in restores access to everything you've bought, without needing to dig up old keys again. This is standard behavior for most modern digital game platforms, not something unique to Blizzard, but it's worth knowing if you're used to thinking about game keys the way you'd think about a physical disc that only works on one machine.

What a key does not automatically include

A base game key unlocks the base game as sold. Expansions, added content, or optional extras are typically separate purchases and separate keys or entitlements, even for games in the same franchise. Because offerings and editions change over time, it's worth checking a game's current listing on Battle.net directly to see what a specific key or edition includes at the time you're buying, rather than assuming it matches an older release.

Where keys are sold

Battle.net keys can be bought directly through Blizzard's own store, or through third-party retailers that sell authorized keys for redemption on the platform. Either route results in the same outcome once redeemed — a license added to your account — but the buying experience, support process and any bundling differs by retailer. General good practice applies regardless of where you buy: confirm the key is meant for Battle.net specifically, and keep your purchase confirmation until the code is successfully redeemed.

What to do if a key doesn't redeem

Occasionally a key fails to redeem — it might already be used, entered incorrectly, or simply not recognized by the client. The first step is always to double-check the code for common transcription errors (characters like zero and the letter O, or one and lowercase L, are easy to mix up), since that accounts for a large share of failed redemptions. If the code still doesn't work after a careful re-check, the appropriate next step is contacting whoever you purchased the key from — Blizzard directly if you bought through the official store, or the retailer's own support channel if you bought through an authorized reseller — rather than assuming the key itself is fraudulent.

Editions and what they typically include

Blizzard titles are sometimes sold in more than one edition, where a higher-tier edition bundles in extra content — cosmetic items, bonus in-game items, or a season pass style entitlement, depending on the game. Exactly what's included in any given edition changes by title and by release, so the only reliable way to know what you're getting is to read the specific edition's listing on Battle.net or an authorized retailer at the time you buy, rather than assuming editions are structured the same way across every Blizzard game.

Account benefits worth knowing about

• A single Battle.net account can hold licenses for every Blizzard title you own.
• Your friends list and presence typically carry over between the games on that account.
• Reinstalling the client and signing in restores your existing library automatically.
• Account security settings (like two-factor authentication, where offered) protect the whole library at once, not just one game.
• Double-check a key carefully for transcription errors before assuming it's invalid.

Gifting a Battle.net key

Because keys are redeemed against an account rather than a device, gifting one is straightforward in principle: the recipient enters the code on their own account, and the license attaches there. If you're buying a key specifically as a gift, it's worth confirming with the recipient which region their account is set up in before purchasing, since a key sourced for a different region may not redeem cleanly on an account tied elsewhere.

If you want the community side of the picture rather than the purchasing side, read how Battle.net ties games and communities together. For general guidance on evaluating where to buy any game key, see our best-practices guide, or browse how game key marketplaces work more broadly. The account-security habits that protect a whole library at once are covered in our key security guide, which applies just as well to PC accounts. Everything else we've written starts from the AfterCharge Keys home page.