Symbolic generalization refers to the transfer of learning to symbolically related stimuli. In slot-machine gambling, near misses describe instances where a losing stimulus display resembles an actual win display (e.g., 2 out of 3 matching stimuli on the payout line) and may promote excessive patterns of play. The present study sought to further examine the role of symbolic generalization in near-misses using a simulated slot-machine gambling task. A sample of 91 recreational gamblers first underwent relational training and testing involving gambling-specific stimuli (e.g., cherries and bells). Next, one stimulus (labeled, for the purposes of clarity, “X”) was presented as an image on slot-machine reels depicting win, near-miss, and loss displays. Symbolic generalization was tested with presentations of stimuli indirectly related to X via same (“C”) and opposite (“D”) relations. We expected higher closeness to win ratings of displays consisting of C compared to D, with similar ratings given to near-miss outcomes involving these stimuli. Results supported these predictions and highlight ways in which symbolic generalization via same and opposite relations may influence player preference in three-reel simulated slot machines. (PsycInfo Database Record (c) 2021 APA, all rights reserved)