Officially Supported
- Latest Stable Chrome
- Latest Stable Edge
- Latest Stable Safari
- Viewport Width of at Least 360px
- Normal Browser Mode, Not an Embedded or In-App Browser
Best Effort (Not Officially Supported)
- Older Versions of Chrome, Edge, and Safari
- Latest Stable Firefox
- Latest Stable Brave
- Android Chrome
These environments may work, but we do not guarantee full compatibility.
Not Supported
- Viewport widths below 360px, regardless of device, browser, zoom level, split-screen mode, or embedded frame. Layout issues below 360px are outside our supported compatibility range.
- In-App Browsers (Instagram, TikTok, Facebook, LINE, etc.)
- Internet Explorer and legacy Opera
Beta Compatibility Note
Mastermind is supported on the latest stable versions of Chrome, Edge, and Safari with a viewport width of at least 360px. Older browser versions, Firefox, Brave, and Android Chrome may work, but are best-effort. If you report a compatibility issue, we may ask you to update your browser and confirm the viewport width before investigating.