As a former kid who also got lost in stores, I think you've really channeled the experience into a game, just long lines of the same shelves. The mist even helps to add to this dream-like feel that helps me feel lost. On the other hand, I can't help but feel like you might have benefited from making each part of the store themed (produce, frozen, etc.)? It would make it easier to remember which of the items you've already gotten, but then you might lose that childhood dream-like quality. Either way, I feel like you have something pretty great here!