# What is The Pillar?

> The Pillar is a browser game and advertising marketplace. A window is a licensed ad pane on a 3D tower, not real property and not a security.

_Last reviewed: 2026-09-21_

## How it works

Sign in with X, pick a pane, and light it. Paste your company URL and The Pillar fills the window with your brand automatically. Occupancy is an advertising licence for a set period — see https://thepillar.io/legal/license for exactly what you get.

## Common questions

### What is The Pillar?
The Pillar is a browser game and advertising marketplace. A window is a licensed ad pane on a 3D tower, not real property and not a security.

### Is a window on The Pillar real estate?
No. A window is a licensed advertising pane on a 3D tower. It is not real property, not a deed, and not a security.

### What do I get when I light a window?
A licence to display your brand — name, logo, and link — on that pane for the period you paid for. When it ends, the pane returns to inventory.

### How many windows are there?
The tower has 1920 panes (80 floors, four faces, six panes per face).

### How do I light a window?
Sign in with X, pick a pane, and paste your company URL. The Pillar fills the window with your brand automatically.

### How does billing work?
Lighting a window is a monthly licence charged through Stripe. It renews each month at the same price until you cancel by releasing the window or emailing us.

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The Pillar is owned and operated by Extensions Market (extensionsmarket.com) and created by Vladislav Gerasimchuk. Contact: contact@extensionsmarket.com.