What a region lock actually restricts
A region lock restricts where a key can be redeemed, not where the game can be played. Once a locked key has activated successfully on an account, the game generally travels with you — you can install and play it abroad. The lock is a gate at the moment of activation, and it checks the country your account is registered to, not the country you are currently sitting in.
That distinction matters because it determines what a VPN can and cannot do for you. Publishers price the same game very differently across markets, sometimes by a factor of three or more, and region locks exist to stop those markets leaking into each other. The lock is enforced by the launcher against your account, so masking your connection does not change the fact the account belongs to another country.
Reading the labels
"Global" or "Worldwide" means the key carries no activation restriction. It is the label you want and, on a competitive listing, usually the reason one offer costs more than another that looks identical.
"EU" or "Europe" means the key activates on accounts registered in European countries. Which countries is set by the publisher, not by the seller, and the boundary is not always the EU proper — some keys treat the UK, Switzerland, Norway or Turkey as inside, others as outside.
"ROW" is the label to be careful with. It means "rest of world", and it is defined by exclusion: everywhere except some other named region, usually the one where the game is cheapest to buy. A ROW key is often a Global key with one or two markets carved out, but the listing rarely says which. If your country is the carve-out, the key will not work, and you will not find out until the launcher tells you.
Country-specific labels — "US only", "Germany only" — mean exactly what they say and are the least ambiguous of the set. Treat any listing with no region field at all as unknown rather than global, and ask before buying.
Why VPN activation is the expensive shortcut
Listings saying "VPN required for activation" are selling you a key for a market you are not in and suggesting you pretend otherwise. It sometimes works. The reasons not to do it are worth knowing in advance.
Every major launcher prohibits it in its terms of service, and those terms generally reserve the right to revoke a licence obtained or activated in breach of them. The sanction is usually applied to the account rather than to the single key, which means the thing at risk is your whole library rather than the €15 you were trying to save — and a revocation can arrive well after the purchase, not at the moment of activation.
There is a quieter cost too. Some accounts become region-pinned after activation in another market, which can affect what you are able to buy afterwards and in which currency. Changing your account country back is not always a self-service operation, and on some platforms it is restricted by how recently you last changed it or by the payment method on file.
Gift cards and wallet codes are stricter
Wallet top-ups are not keys and behave differently. A wallet code is denominated in a currency and can only be redeemed by an account whose wallet is in that currency — a €20 Steam code will not redeem on a US-dollar account, no matter where you are sitting or which VPN you are using. There is no partial redemption and no conversion.
This is why buying a wallet code in a cheaper currency is not a way around regional pricing: the account that can redeem it is an account already priced in that currency. It is also why wallet codes are the least forgiving thing on a key site to get wrong, because a currency mismatch cannot be fixed and a redeemed code cannot be returned.
Console gift cards behave the same way and add a store-region check on top. A card bought for one country's store will not redeem against an account registered to another, even within the same currency zone.
Who decides the restriction, and where it is written down
The restriction is set by the publisher when the keys are generated, and it is enforced by the launcher. The store you buy from neither creates it nor can waive it. This is worth knowing because it tells you whose statement to trust: a seller describing a key as Global is repeating what they were told by whoever they bought it from, and on a marketplace that chain can be several hands long.
The reliable check is the platform's own product page. Steam store pages carry a notice when a product is restricted, and publishers frequently publish the regional breakdown around a launch. If a listing says Global and the publisher says the key you are looking at is issued for a single market, believe the publisher.
Where a listing gives no region at all, the safe assumption is that the seller does not know either. That is not necessarily dishonesty — resellers buy in bulk and regional metadata is routinely lost along the way — but it does mean the risk has quietly become yours.
Before you buy
Know which country your account is registered to — not which country you live in, which can differ if you have moved, or if you created the account while travelling, or if you set it years ago and have forgotten. On most launchers this sits in account settings next to the payment or store region, and on some it is only visible while adding a payment method.
Prefer Global when the difference is small. The premium on a Global key is usually less than the cost of a key you cannot use, and considerably less than the cost of an account you cannot use.
If a key does turn out to be locked to a region you are not in, do not activate anything and do not reach for a VPN to rescue the purchase. An unredeemed key is a refund conversation; a key redeemed in breach of a launcher's terms is a much worse conversation, and one you may end up having about your whole library rather than one game.