Emotionally affective games are becoming an increasingly popular topic of discussion as of late. From the more mainstream titles like Ico and Shadow of the Colossus to lesser-known (and decidedly less high tech) indie games like Passage and Gravitation, developers and players alike are seeing past the buzzphrase "games as art," and really noticing games' potential as tools to evoke emotion.
Which emotions, though? Are games limited to the tried-and-true feelings of happiness, sadness, love, sympathy, anger, fear...? Can't they also make their players feel...disgusted? Shameful? Regretful? Guilty?