immersivist 

Someone who gets very into many things.

A connoisseur of experiences and stories that involve active participation.

A real Virtual Reality or Augmented Reality nerd.

Yo, has that dude been in VR for 4 hours?
Yeah, he's an immersivist, he needs sunlight.

immersivist by Unversed August 9, 2021

immersionist 

One who learns a foreign language primarily through immersion or who believes such an approach is best in language learning.

The immersionists often use Anki to solidify the things they pick up from their immersion time.

immersionist by zohar003 July 21, 2019

Immersionist 

One who can dive into stories and worlds and fully immerse into those.

Roberto is such an Immersionist, the boundaries between the worlds blur in his mind.

Immersionist by Greatfenris December 30, 2023