In Buddhist philosophy, Samsara (the Sanskrit word for 'journeying' is the cycle of life, death and rebirth. It is a system which covers a number of hierarchical existential layers.
Journey, is an interactive parable; a beautiful experience of exploration and travel. Conceptually, it shares many ideas with Buddhism including Samsara and reincarnation. The great music in the accolades trailer is by Tycho.
In storytelling, a writer will often employ the monomyth cycle in order to chart the journey of the hero. Check out this great animation below explaining a 'Hero's Journey'.