Each controller's events went only to its own player's screens, and the
main menu is the first player's: a gamepad on any port but the first
did nothing, and a phone can list a device of its own (its touch
controls) before the gamepad. With one person playing, the first
player's screens now read and take every controller's events; with two
or more, each controller keeps to its own player's.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>