The game will ask your browser for

• Mouse capture (pointer lock) — hides the cursor and lets the mouse aim without hitting the window edge. Press Escape at any time to release it.
• Fullscreen — on phones only, to reclaim the browser's bars for the play area.
• Landscape lock — on phones only. Some browsers, including Safari on iOS, refuse this; you will see a rotate prompt instead, and that is fine.

What it will not ask for

Camera, microphone, location, notifications, clipboard, or any file. It has no code that could. Nothing you do is sent anywhere — see Legal for the full statement.

If you say no

The game still runs. Without mouse capture, aiming stops at the window edge and the cursor stays visible; click the game at any time to try capturing again.