What VR game has provided you with the most immersive world and why did it stand out to you?

I've been diving into various VR titles lately, and I'm always amazed at how some games create such immersive worlds that I lose track of time. For me, "Half-Life: Alyx" stands out due to its detailed environments and engaging narrative. The way the game utilizes VR mechanics to enhance the storytelling truly makes it feel like I'm part of the world.

I'm curious to hear from the community: which VR game has captivated you with its immersive environment?
What elements, such as graphics, sound design, or gameplay mechanics, made it feel so real?