VaultCheck

Warns you before you buy a game you already own on Steam, PlayStation, Xbox, or Nintendo — across major game stores. VaultCheck stops you from buying the same game twice. Connect your Steam, PlayStation, Xbox, and Nintendo libraries once, and VaultCheck quietly checks every game store you browse against what you already own. When you land on a product page for a game that's already in your collection, a small overlay warns you — before you spend money on a duplicate. WHAT IT DOES • Duplicate warning — a non-intrusive overlay appears on game product pages for titles you already own (on any connected platform). • How long to beat — see the estimated completion time for a game right on the store page, so you know what you're committing to. • Savings tracker — VaultCheck tallies the money you didn't waste on games you already had. • Cross-platform matching — owning "God of War" on PS5 warns you on the PC store listing too. WORKS WHERE YOU SHOP VaultCheck runs across a wide range of game stores — the major PC and console storefronts, popular game-key resellers, and large general retailers. See the full, up-to-date list of supported stores at vaultcheck.io. HOW IT WORKS Sign in (free) at vaultcheck.io and connect your platforms. The extension reads only the game title on the product page you're viewing and checks it against your own library — nothing more. Your library lives in your VaultCheck account; the extension uses your existing login session to look things up. FREE & PREMIUM Free: connect Steam plus one console platform, with duplicate warnings and completion times. Premium unlocks all platforms, unlimited dismissals, and detailed savings and backlog analytics.