
Summing up the formal characteristics of play we might call it a free activity standing quite consciously outside “ordinary” life as being “not serious,” but not at the same time absorbing the player intensely and utterly. It is an activity connected with no material interest, and no profit can be gained by it. It proceeds within its proper boundaries of time and space according to the fixed rules and in an ordinary manner.






Mimicry by contrast is the domain of imaginative role play and “make-believe” in character.
Finally, Callois (1958: 128-139) reminds us that ilinx is “the Greek term for whirlpool.” Ilinx is by no means “unique to man.” Callois describes a “joyous quality” where enthusiastic players:
momentarily destroy the stability of perception and inflict a kind of voluptuous panic upon an otherwise lucid mind.
One plays football, billiards, or chess (agôn); roulette or a lottery (alea); pirate, Nero or Hamlet (mimicry); or one produces in oneself, by rapid whirling or falling movement, a state of dizziness and disorder (ilinx).
As far as agôn is concerned, Callois points to (1958: 131) the importance of maintaining a somewhat even playing field. Agôn is:
like a combat in which equality of chances is artificially created in order that the adversaries should confront each other under ideal conditions…
Callois informs us (1958: 128, 133) that “Alea is the Latin name for the game of dice.” It “reveals the flavor of destiny,” and like the spirit of Agôn just described, provides latitude for innovations being left to the player’s initiative.”

An outcome known in advance, with no possibility of error or surprise, clearly leading to an inescapable result, is incompatible with the nature of play.
Callois, Roger (1958) The Definition of Play and the Classification of Games in Salen, Katie and Zimmerman, Eric (2006) The Game Design Reader: A Rules of Play Anthology. The MIT Press, Cambridge, MA. Originally published in Callois (1958) Man, Play and Games. Published by Librairie Gallimard.
Huizinga, Johan (1950) Homo Ludens: A Study of the Play-Element in Culture. (Originally published in 1938) The Beacon Press, Boston.