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This essay sheds light on what is nostalgia, explicates how people can experience nostalgia, elucidates how nostalgia influences customers purchasing decisions, and expounds upon why companies should produce modernized nostalgic products that are derived from mass media franchises. Succinctly stated, nostalgia is a term that refers to a "wistful desire to return in thought to a former time". When people experience nostalgia, they experience a sentimental yearning to re-experience the euphoria that they experienced in a former time. A person who, for instance, revels in going on cruise vacations, may experience nostalgia for his favorite past cruise vacation experiences when he reminiscences about his favorite past cruise vacation experiences that have elapsed. A person who, for instance, revels in playing dodgeball, may experience nostalgia for his favorite past exhilarating dodgeball sessions when he reminiscences about his favorite past exhilarating dodgeball sessions that have elapsed. A person who, for instance, revels in watching entertaining movies, may experience nostalgia for his favorite past engrossing entertaining movie watch sessions when he reminiscences about his favorite past engrossing anime series watch sessions that have elapsed. A person who, for instance, revels in watch engrossing anime series, may experience nostalgia for his favorite past engrossing anime series watch sessions when he reminiscences about his favorite past engrossing anime series watch sessions that have elapsed. A person who, for instance, revels in playing enthralling video games, may experience nostalgia for his favorite past enthralling video game gameplay sessions when he reminiscences about his favorite past enthralling video game gameplay sessions that have elapsed. People experience nostalgia primarily because certain euphoria-inducing experiences of their past trump the experiences in their present in terms of their euphoria-inducing value.