My endeavor in this paper is to examine the ways in which exactly the general structure of perception is modified in the case of the reception of theatre performances. First, perception in general is examined and it is argued that a basic characteristic of perception is that it is sometimes interdependent with action. After the analysis of perception in general, I turn to the special case of the perception of a theatre performance (or, theatre-perception, for short) and examine the role (...) of the perception of the possibility of action in the case of watching a performance. I try to point out that theatre-perception cannot be sufficiently analyzed without taking into consideration the action-oriented character of perception. If we perceive a gun on stage we perceive it as the possibility of an action, that is, as affording certain actions. (shrink)