This app can be installed like a regular app: an icon on your home screen, its own window with no browser address bar, and it keeps working (the app shell itself, not live game/game-list data) if your connection drops.
Android
Use Chrome — it installs a proper app; Firefox mostly just adds a bookmark shortcut.
- Open this page in Chrome.
- Tap the ⋮ menu in the top-right corner.
- Tap Install app (or Add to Home screen).
- Confirm — the icon then appears on your home screen like any other app.
iPhone / iPad
Must be Safari — installing from the home screen only works there on iOS.
- Open this page in Safari.
- Tap the Share icon (a square with an arrow pointing up).
- Tap Add to Home Screen.
- Tap Add to confirm.
Desktop (Chrome / Edge)
- Look for an install icon (⊕ or a small monitor) at the right edge of the address bar.
- Click it, then click Install.