VaultCheck – Game Duplicate & Sub Checker

See if you already own a game, or it’s on your Game Pass or PS Plus, before you buy. Steam, PlayStation, Xbox, Nintendo & Epic.

Play what you paid for. Three questions VaultCheck answers before you spend money on a game: 1. Do I already own this — on any platform? 2. Is it included with a subscription I already pay for? 3. Is it cheaper somewhere else right now? VaultCheck is the only extension that checks your PlayStation, Xbox and Nintendo libraries — not just Steam. Connect once, then shop normally. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT YOU SEE ON A STORE PAGE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ A small card appears with only what's relevant: "You already own this title on PlayStation." Cross-platform duplicate warning, plus a last-chance alert at checkout. "Included with Game Pass — play it at no extra cost." Catches games already free with a subscription you pay for. One catch can save you $70. "This one asks for ~25 hrs of your time (~62 hrs to 100% it)." Completion times from IGDB, so you see the time cost as well as the price. "Buying it grows your backlog to ~1,240 hrs." The honest number. Nobody else shows you this. "Cheaper elsewhere: $14.99 at Fanatical." Live price comparison across stores. Dismiss any warning permanently, for any game, as many times as you like. That's free and always will be. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FREE — EVERY PLATFORM, NO CREDIT CARD ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - All five platforms — Steam, PlayStation, Xbox, Nintendo, Epic - Duplicate warnings across every library - Subscription checks — Game Pass and PlayStation Plus Extra - Cheaper-elsewhere price check - Checkout warning screen - Completion times and backlog hours - Unlimited dismissals Premium ($1.99/month) adds a backlog analytics dashboard, subscription value breakdown, and a savings tracker. Everything that stops you overspending is free. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHERE IT WORKS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Steam · Epic Games Store · GOG · Humble Bundle · Fanatical · Green Man Gaming · PlayStation Store · Xbox / Microsoft Store · Nintendo eShop · and more added regularly. Cross-platform matching means owning God of War on PS5 warns you on the PC listing too — the check no Steam-only extension can do. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ TRY IT WITHOUT INSTALLING ANYTHING ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Run The Backlog Reckoning at vaultcheck.io/backlog — paste a Steam ID and get your unplayed count, the hours and dollars sitting in it, and a backlog grade from S to F. 60 seconds, no signup, no install. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PRIVACY ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - No passwords, ever. Steam uses its official sign-in — your password goes to Steam, never to us. Consoles are read from your own library page while you're already signed in. - What we store: the games you own, which platforms they're on, and which subscriptions you've told us you pay for. Nothing else — no browsing history, no keystrokes, nothing from unsupported sites. - On a store page, the extension reads that game's title and checks it against your library. It does nothing on other sites. - Price comparisons are looked up through CheapShark, which receives the game title only — never anything about you or your account. - Delete your account and your entire library at any time from your dashboard. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ GETTING STARTED ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. Install VaultCheck 2. Connect Steam — about 30 seconds. Duplicate checks go live immediately. 3. Optional: add PlayStation, Xbox, Nintendo, Epic, and your subscriptions whenever you like. Each one closes another gap. 4. Shop anywhere. VaultCheck handles the rest. Questions, or a store you'd like supported? support@vaultcheck.io VaultCheck is an independent tool and is not affiliated with, endorsed by, or sponsored by Valve, Sony, Microsoft, Nintendo, or Epic Games. All trademarks belong to their respective owners.