Perceived Action Space: Design the Possibilities Players Can See
Technical terms: Perceived action space
The rules may allow thousands of actions while a player notices only five. The perceived action space is the set of actions a player recognizes as possible and worth considering.
It can be smaller than the legal action space because possibilities are hidden, unclear, forgotten, or dismissed. It can also contain imagined actions that the system does not support.
See it in a word construction
A player may legally form thousands of dictionary words but perceive only those suggested by visible letters, familiar vocabulary, recent ideas, and the current arrangement. An elegant move that no one can discover is absent from practical play even though the code permits it.
What you can do with it
Adding options does not automatically add agency. Use arrangement, examples, feedback, teaching, and carefully chosen constraints to make valuable possibilities thinkable. During testing, record both overlooked legal actions and repeatedly attempted illegal ones.
Ask a player
What possibilities did you notice immediately, and what did you discover only after the puzzle changed?
Nearby ideas
- Action space — identify everything the rules permit.
- Player mental model — understand why a player expects certain actions to work.
- Affordances and signifiers — make valuable actions easier to recognize.
- Cognitive load and choice overload — prevent visible possibility from becoming paralysis.
Robert Zubek, Elements of Game Design (2020), “Mechanics,” section “Perceived Action Spaces.” ---