If we interact with something, we validate it. This is a fundamental truth.
A game is something we interact with, while itself also representing a conception of some sort of world. Interaction with the world reveals to us both truths about our identity and possibilities for choice.
What am I? Our current manifestation of ourselves is a reflection of our previous choices.
What will I choose to become now? Our future-self will likewise be the result of the choices we make now.
A game presents a distinct world. In this distinct world, we may learn about choices we weren’t aware of in any other context. We may also make choices about what to be that we were not exposed to in any other context.
Distinct from the “real” world? In truth, everything humans do is a game. This world is just one game world of many.