Write iOS Game Once and Play in Any Way
summary
A tiny balance game that only needs left/right input is implemented once and driven by six real input methods: slider and on‑screen buttons, Core Motion accelerometer tilt, external keyboard via accessibility adjustable action, game controller sticks, and iOS 18 eye tracking using the unhover modifier. Code follows Apple docs for each API, all adapters are small, and the video demo shows each method working reliably so the same game view runs unchanged across modalities.
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