<p>This review explores the complex nature of emotional experiences, extending beyond traditional emotion theories to encompass a spectrum of complex emotional states. It investigates the psychophysiological underpinnings of nuanced emotions such as awe, the sublime, and aesthetic emotions; it contains brief explanations for such phenomena as near-death experiences and out-of-body experiences and chills. These emotional states have remained underexamined in prior studies, which have predominantly concentrated on categorical emotions (such as happiness and anger) or affective dimensions (like valence and arousal). Recent advancements in the field have prompted a shift from rigid emotional classifications toward a deeper understanding of the complex nature of human emotional experiences. This evolving perspective creates new opportunities to provide a more nuanced framework for complex experiences, moving beyond simplistic positive or negative labels. A significant focus is given to induction of such states, particularly with virtual reality. The immersive nature of virtual reality offers unique avenues for inducing complex emotions, underscoring its potential for therapeutic applications. In various domains, including therapy, education, technology and game design, promoting positive emotional states such as awe and the sublime can enhance well-being, foster creativity, and increase cognitive flexibility. As further research reveals the psychological mechanisms underlying these experiences, it may lead to interventions that leverage the power of complex emotions to bolster mental health and personal development. Consequently, investigating complex emotional experiences not only enriches theoretical frameworks but also holds significant potential for enhancing human well-being.</p>