Dream–reality confusion (DRC) is a difficulty or an impossibility to determine whether an event or an experience took place during wakefulness or if it was the content of a dream. […] Individuals prone to DRC—in comparison with those who rarely or do not at all experience DRC—more often experience various sleep-related phenomena, and they also have higher neuroticism, thinner boundaries, higher dream recall frequency, and more involved attitudes toward dreams.” (Source: The Phenomenology of Dream-Reality Confusion: A Quantitative Study.)

TL;DR: I designed this while I was depressed and playing a lot of Kingdom Hearts.