Use motion only when a preview benefits the player
The practical problem
Autoplaying video covers on every catalog card distracts keyboard users, consumes energy and may hurt initial loading.
Implementation protocol
Use static posters by default; provide a deliberate preview control and a clear stop button. Honor reduced-motion preferences for ambient animations.
Worked scenario
Compare a 70 KB poster with a several-megabyte gameplay loop under slow mobile bandwidth to determine whether the preview improves the selection task.
What could go wrong
Do not remove gameplay state cues when disabling decorative motion.
Acceptance criteria
Check pause, keyboard focus and scroll performance with ten cards.
Source material and evidence boundaries
For the topic Use motion only when a preview benefits the player, use the sources listed below to check relevant methods. Any worked figures illustrate a scenario, not measured MojPlayWin performance. Consult the shared evidence standards before applying the method.