Defining "GAMEPLAY"

VIDEO GAMES, one may define it to be a combination of audio/visual design (video) to compliment the interactive component (game), with the A/V design presenting and limiting the interactive component.

Gameplay includes all player experiences during the interaction with game systems, especially formal games. Proper use is coupled with reference to "what the player does". Arising alongside game development in the 1980s, gameplay was used solely within the context of video or computer games, though now its popularity has begun to see use in the description of other, more traditional, game forms. Generally, the term gameplay in video game terminology is used to describe the overall experience of playing the game excluding factors like challenges and movement. The term game mechanics refers to sets of rules in a game that are intended to produce an enjoyable gaming experience.

'Gameplay' to me is a measure of how well various factors glue together.

I usually think controls are the defining factor. If a game has fluid controls that don't get in the way, then I can usually overlook things like bad level design since I'm at least not getting frustrated with every little movement.

Then I factor in the genre specific things. Level design, like I already mentioned. Stuff like that, y'know. It varies from game to game.