Game Library Checker
By: FireGilles Add-on
Check if you own a game across Steam, GOG, and Epic. Shows GeForce NOW availability.
English
Español
Français
Português
日本語
简体中文
한국인Overview
Features & Capabilities
User Growth & Download Statistics
Manifest V3 Add-on
- By:
- FireGilles
- Daily users:
- 3 1
- Version:
- 1.11.0 Last updated: 2026-06-30
- Version code:
- 6332002
- Creation date:
- 2026-04-12
- Risk:
- High risk impact High risk likelihood
- Permissions:
- Host permissions:
- https://steamcommunity.com/*
- https://embed.gog.com/*
- https://www.epicgames.com/*
- https://store.epicgames.com/*
- https://accounts.epicgames.com/*
- https://store.steampowered.com/*
- https://static.nvidiagrid.net/*
- https://games.geforce.com/*
- https://steamcommunity.com/*
- Size:
- 43.72KB
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-07-26
- Compare stats and ranking:
- Game Library Checker vs Do I own this game?
- Game Library Checker vs Epic Games Free Monitor
- Game Library Checker vs GeForce NOW check for Steam
For Developers
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Is Game Library Checker Safe?
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
Game Library Checker requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Request access to the following domains: steamcommunity.com, gog.com, epicgames.com, steampowered.com, nvidiagrid.net, geforce.com
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
Game Library Checker may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.
Risk likelihood analysis details
- High This extension was recently updated in the past month. New updates may not be stable or safe.
- High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
- Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
Extension Guard
Discover every extension in use, analyze risks, and enforce blocking policies with Extension Guard
Secure Your Browser Upgrade to see full risk analysis details
Best Game Library Checker Alternatives
Here are some Firefox add-ons that are similar to Game Library Checker:
Do I own this game?
Adishone
23 1.67 
(3) 
Epic Games Free Monitor
Stanislav Ivanenko
1 0.00 (0) 
GeForce NOW check for Steam
Matt Rossi
1 0.00 (0) 
Epic Games Library Extension
yacine-bens
32 5.00 (1) 
PassCheck for Steam
Flame6
1 0.00 (0) 
Humble Steam Check
Decobus
1 0.00 (0) 
Epic Games Library Viewer
Michał Marczuk
644 3.50 (8) 
Is It On Game Pass
Eli
332 5.00 (3) 
SteGOG
Ugzuzg
45 3.14 (7) 
Game Pass Checker extension
mon
7 4.00 (1) 
Free Game Deals
Free Game Deals
17 5.00 (1) 
GeForce Now Lookup Pro
Bắn Cá 789win
1 0.00 (0)