Install the extension

The extension overlays God Mode onto your league page, and it's how ESPN and Yahoo leagues connect. It should be on the official Chrome Web Store soon — in the meantime, installation is manual and takes about a minute.

Download v0.5.3 (.zip)

1. Download and unzip

Download the file above and double-click it to unzip. You'll get a folder called fantasymath-extension-0.5.3 — keep it somewhere it can stay (Chrome loads the extension from this folder, so don't delete it afterward).

2. Load it in Chrome

Type chrome://extensions in the address bar, flip on Developer mode (top right), then click Load unpacked and pick the unzipped folder. Pin the extension from the puzzle-piece menu so the popup is a click away.

Chrome's extensions page (chrome://extensions) with Developer mode switched on and the Load unpacked button

3. Sign in

Click the bolt icon in the toolbar and enter the same email as your Fantasy God Mode account. We email you a six-digit code — no password.

The extension popup asking for your email The popup's six-digit code field

4. Connect your league (ESPN and Yahoo)

Sleeper and Fleaflicker leagues connect from the app by URL — nothing to do here. ESPN and Yahoo have no public league data, so the extension connects them from your own account: open your league in Chrome, click the bolt, and hit Connect. ESPN connects the league you're looking at; Yahoo lists every league on your account so you can pick which ones to use your slots on. The app picks it up on its own.

The popup on an ESPN league page with the Connect this league button The popup on Yahoo listing the account's leagues with checkboxes

5. Visit your league page

With God Mode on, win probabilities, projections and lineup advice sit right on the page — the before and after on the homepage shows what to expect.

A note on updates

An unpacked extension doesn't update itself. When the Chrome Web Store version is live we'll say so at app → Help, and installing it from the store replaces this copy and auto-updates from then on.

Why does Chrome warn about Developer mode?

Chrome shows a standard notice whenever any unpacked extension is loaded — it's how extension developers test their own work, and it's the official way to run an extension that isn't on the store yet.