Psychomotor exercise · ~60 sec a run · free
Ball Balance
Keep the ball centred on a tilting plate against continuous disturbance
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Ball Balance is a real-time 2D physics task where you control a tilting plate to keep a rolling ball inside the central scoring zone. Your pointer position (or arrow keys, or a gamepad stick) sets the plate tilt, which creates gravity-like acceleration on the ball in that direction. A continuous perturbation nudges the ball toward the edge throughout the session. The scoring circle is the same geometric object that the physics system scores against, so there is no gap between what you see and what you earn. Your score reflects both the fraction of time the ball spent inside the zone and how close to the centre it was, rewarding precise control over mere zone-grazing.
About this test
About this test
What this test measures
This measures fine motor control and anticipation: keeping a rolling ball inside a small central zone on a tilting plate while a continuous disturbance pushes it toward the edge. The plate carries momentum, so it rewards smooth, predictive correction over sharp reaction, the same continuous-control feel as hand-flying.
How to improve your score
- Lean gently against the drift before the ball reaches the edge rather than reacting after it has already left the zone.
- Make small counter-tilts and ease off as the ball nears centre, a strong push past the middle overshoots because of momentum.
- Use a pointer or gamepad stick rather than the keyboard so you can adjust both tilt axes at once for finer control.
Good to know
Good to know
Technique Tip
Think of the plate as a physical object with inertia: the ball accelerates while you hold a tilt and carries that speed even after you ease off. The most effective technique is to apply a small corrective tilt just before the ball drifts out of the zone, rather than reacting after it has already left. Watch the drift direction of the perturbation and lean against it slightly in advance.What Good Looks Like
A score above 75 means the ball spent most of the session inside the zone with reasonable centring. Scores above 90 indicate near-continuous centring with tight precision close to the middle of the zone. Very few players exceed 90 on their first attempt; most improve noticeably on their third or fourth run as they learn to read the perturbation rhythm and reduce corrective overshoot.Real tests use dedicated hardware
On-site selection systems run tasks like this on calibrated joysticks, rudder pedals and custom response panels that no browser exercise can replicate, so treat this as training for the underlying control skill rather than a replica of any machine. One practical tip from candidates who have sat the real assessments: practise with a mouse or a gamepad, not a laptop trackpad. A trackpad makes smooth, continuous two-axis control far harder than the real test ever would.
Frequently asked questions
What does the score measure?
What does the score measure?
Is Ball Balance affiliated with any official pilot selection test?
Is Ball Balance affiliated with any official pilot selection test?
How do I improve my score?
How do I improve my score?
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