Unit09 · GRID MART

GRID MART Privacy Policy

Last updated: August 7, 2026

GRID MART is a grocery store simulator that runs inside your browser. This policy explains what it stores, what it never does, and why it asks for each permission.

The short version

Nothing leaves your computer. GRID MART has no server. There is no account to create, nothing to sign in to, no leaderboard, and no analytics, advertising or crash-reporting code anywhere in it. The whole game — the shop, the shoppers, the economy, your saves — runs and stays on your machine. You can disconnect from the internet and play it exactly as normal, which is the simplest way to check this claim for yourself.

What GRID MART stores, and where

All of it lives in the extension's own private storage on this computer (chrome.storage.local). None of it is synced to any account and none of it is transmitted.

• Your saved games: four save slots, each holding a shop — its money, day, clock, floor plan, fixtures, stock, staff, upgrades and the history of how it has traded.
• The name you give your shop: typed by you, stored with that save, and shown only to you.
• Your settings: zoom, which side the touch controls sit on, their opacity, sound and music volume, whether floating numbers appear, and whether the autopilot shopkeeper is on.

That is the complete list. There is no profile, no identifier, no e-mail address and no contact information of any kind, because the game never asks for any and has nowhere to put it.

Deleting a save from the title screen removes it. Removing the extension, or clearing your browser's data for it, removes everything above permanently. There is no copy anywhere else, including with us.

What GRID MART sends

Nothing. No save, no score, no shop name, no usage statistic, no error report and no identifier is transmitted to Unit09 or to any third party. There is no endpoint to send it to.

This is not a policy promise layered over a networked game — the code contains no network calls at all. The published package is checked before release for exactly this, and the extension is granted access to no website, so it could not reach one even if it tried.

Permissions, and why each one is asked for

GRID MART requests two permissions, and no access to any website.

• Storage: to keep the saves and settings described above on this device.
• Unlimited storage: a shop late in the game — a whole district of floor plan, fixtures and trading history, across four slots — does not fit in the default quota, and a save that fails to write is a game that loses your progress.

It asks for nothing else. In particular it does not request the tabs permission, which is the right to read the address and title of every tab in your browser. Pressing the toolbar icon opens the game in a tab, and raises that tab if it is already open; to do that the extension remembers one tab number in session storage, which is discarded when Chrome closes. Finding the tab by searching your open pages instead would have required that permission, and a game has no business with it.

Multiplayer, which this version cannot do

The game's settings screen shows a co-op option. It cannot connect in the Chrome Web Store version, because the peer-to-peer library it would need is not included in this package. Entering a room code does nothing at all, and no connection, request or data transfer of any kind occurs.

If a future version does enable co-op, it would connect your browser directly to the browser of the person you are playing with, and this policy will be updated to say exactly what is exchanged, and the version number it starts in, before that version is published. Today, that code cannot run.

Children

GRID MART collects no personal information from anyone, including children.

Changes to this policy

If a future version changes how data is handled, this policy will be updated and the "Last updated" date revised before that version is published to the Chrome Web Store.

Contact

Questions about privacy: rnd@unit09.app