How to play
Choose gentle seated weight shifts, supported standing weight shifts, or no-motion rehearsal. Seated mode is the default. Follow each wide ski gate by shifting within a comfortable range, then return to centre. Keep both feet supported; do not step, twist quickly or chase maximum range.
Camera mode calibrates your comfortable lateral range locally. Touch and keyboard mode lets you or a helper confirm each shift and return. Five pace profiles change only slope animation and rest—not movement deadlines, points or a demand to move faster.
Safety and privacy
Only use standing mode if you already know it is safe for you. Keep a stable support within reach, use a dry obstacle-free floor, and arrange help if needed. Stop for pain, dizziness, breathlessness, chest discomfort, weakness or loss of balance. Raw video and body landmarks are not stored.
This is general activity, not balance testing, medical measurement, treatment, exercise prescription or proof of improvement.