"Rules of the Game" is rich in sensory detail; we can find imagery in nearly every paragraph. Let's check out some of the most masterful examples.
In the beginning of the story, Waverly describes her neighborhood setting, detailing the creatures both living and dead that were for sale:
"On less crowded market days, we would inspect the crates of live frogs and crabs which we were warned not to poke, boxes of dried cuttlefish, and row upon row of iced prawns, squid, and slippery fish. The sanddabs made me shiver each time; their eyes lay on one flattened side and reminded me of my mother’s story of a careless girl who ran into a crowded street and was crushed by a cab."
This imagery gives us a richly detailed view of what Waverly sees as she walks through the market, but it also hints toward the general theme of confinement and the need for escape ("crates," "boxes," "eyes lay on one flattened side... [like] a careless girl who ran into a crowded street and was crushed"). In particular, the image of the sanddab prepares us for the final scene in which Waverly sees herself in the fish's body on the dinner table, both her and the fish stuck as victims of confinement.
“I was playing in a large high school auditorium that echoed with phlegmy coughs and the squeaky rubber knobs of chair legs sliding across freshly waxed wooden floors."
The above sentence is full of auditory imagery, or the sensory detail of sound: you can hear the scene in your mind, since the narrator tells you that there are coughs that sound phlegmy and squeaks that sound like rubber moving across wood. The effect here is one of realism and tension: the fact that Waverly conveys the sounds so clearly clues you in to the idea that she’s hyper-focused on her surroundings as the chess competition is starting.
(Originally, this question also asked for examples of personification from the story as well as an explanation of how the fish and Waverly herself are symbolically connected. Please follow the respective links for those separate discussions.)