thatsfootball.io runs in any desktop browser, and the same Rust engine also builds as a native client for Windows, macOS and Linux. The native build reads your movement and kick keys directly and lets you choose how frames are presented, which a browser page cannot do: a browser surface offers exactly one present mode and refuses the others. The client is a free, unsigned public beta: each installer is listed with its SHA-256 checksum and its VirusTotal report, next to Google Safe Browsing's status for the site and the download server.