How to Check if You Own a Game on Multiple Platforms
You are on a store page, the game is on sale, and you have the nagging feeling you have seen it before. Maybe you bought it years ago. Maybe it was free on Epic one week and you claimed it without thinking. Maybe it came in a bundle.
There is no single place to check. Every storefront keeps its own library, and not one of them will tell you what you own on a competitor. So here is where to actually look on each platform, in the order that takes the least time.
Steam
The fastest check is the store page itself. If you already own a game, Steam shows a green "In Library" note near the buy button. It is easy to miss, but it is always there.
To search deliberately, open your library and type into the search box at the top of the game list. One thing worth knowing: by default the library hides games you have removed from view, so if you once hid a game it will not appear. Check View → Hidden Games if you expect something to be there and it is not.
Steam will also warn you at checkout if you already own the exact item — but only for that exact item on Steam. A different edition, or the same game on another store, sails straight through.
PlayStation
Two places, and they answer slightly different questions.
Your library — on the console, open Game Library and switch to the Purchased tab. In the PlayStation App on your phone, it is under Game Library. This shows what is attached to your account, including anything you got through PlayStation Plus monthly games.
Your order history — sign in on playstation.com and look under account settings for your transaction or order history. This is the one to use when you want to know whether you actually *paid* for something, as opposed to it arriving with a subscription. That distinction matters: PS Plus monthly games disappear from your library if you let the subscription lapse.
Xbox
Start here: account.microsoft.com/billing/orders. That is your Microsoft account billing history, and it is the most reliable record of Xbox games you have actually purchased.
A warning, because most guides still get this wrong: the old account.xbox.com/GameCollection page no longer resolves. If you have been sent there and got a connection error, the page is gone rather than broken on your end.
You can also open the Xbox app on PC or console and browse My Library → Full library. Note that this mixes purchases with Game Pass titles, which are not yours to keep — if Game Pass lapses, they stop working. Billing history is the honest answer to "did I buy this."
Nintendo
Nintendo splits this across two places too. On the console, open the eShop, select your account icon, and look at your redownload list — that is everything tied to your account. For a purchase record with prices and dates, sign in at accounts.nintendo.com and open your purchase history.
Switch 2 adds a wrinkle. A number of Switch games have "Nintendo Switch 2 Edition" re-releases, which are listed as separate products even though the underlying game is the same one you already own. Some offer a paid upgrade path rather than a full repurchase, so it is worth checking before you buy the new listing outright.
Epic
Go to accounts.epicgames.com/account/transactions for your full purchase history, including every free weekly giveaway you have ever claimed.
Epic is the platform where people most often own things they have no memory of owning. The free game rotates weekly, claiming takes one click, and a lot of us have clicked it for years without ever opening the launcher. If you are going to check one library you have never looked at, make it this one.
GOG, Humble, and the key sites
GOG has a straightforward library. The harder problem is bundle sites.
If you have ever bought a Humble or Fanatical bundle, you have keys you never redeemed. They sit in your account on the bundle site, not in any game library, and they are completely invisible to every check above. Humble keeps them under your purchase history; Fanatical under your orders. This is the single biggest blind spot for anyone who has bought bundles — you can own a game twice without it appearing in either library.
Physical discs
No account anywhere knows about these. If you have a shelf or a box in a closet, that is a manual check, and it is the one people skip.
The part that actually makes this hard
Even after you have opened six libraries, the names do not line up.
- Trademark symbols. God of War on Steam is God of War™ on PlayStation.
- Editions. Owning the base game does not mean the Definitive Edition shows as owned — it is a separate product entry.
- Platform tags. PlayStation appends the hardware generation, so the same game appears as Horizon Forbidden West (PS4) and Horizon Forbidden West (PS5).
- Regional titles. Some games ship under different names in different territories.
So a text search for the exact name you have in your head can come back empty on a library that genuinely contains the game. This is why "just check before you buy" is advice that sounds easy and turns out not to be.
Doing all of that in one step
Realistically, nobody opens six libraries and reconciles four naming conventions while a sale timer is counting down. That is the whole reason duplicate purchases keep happening to people who are otherwise careful with money.
VaultCheck does the reconciliation part. You connect the platforms you use, and it builds one library from all of them — matching titles across stores so that God of War™ (PS5) and God of War are understood to be the same game. After that, when you open a game on any of sixteen storefronts, it tells you on the page whether you already own it, before you buy.
If you would rather see the scale of the problem before installing anything, the backlog grader below reads a public Steam profile and gives you the hours and dollars sitting in games you have never launched. No account, no install.