People often forget how far we've come.
An "upper middle class" person in Europe during the medieval period had a house (more like a barn) with two rooms; one with a fire around which the whole family slept and another one with a workshop for making random stuff.
And that was high end, because the average bugger was slaving away on the fields.
It really is a unique experience. There are of course books that provide a more impactful view on existentialism. But books are passive. Soma is one of its kind in terms of active media, where you are the protagonist (on some level).
It's one of those games that I think highlights that video games can be art.