This is something I’ve been taught, read, and thought a lot about over the years, as both a reader and a writer. When done well, I do like books and games that drop you in the middle of action or just convey the main character’s current thoughts and feelings right off the bat. I’ve enjoyed reading everyone’s responses so far.
Seeing as Have Human, Will Travel! is meant to pick up right after the first game, I tried to inject the right back into the action and help convey the MC’s current sense of mid-portal jump confusion with some onomatopoeia, thought to be honest, I’m still playing with it:
WHOOSH!
A powerful pull drags you forward, your eyes squeezed shut against blinding brightness.
Interestingly, although 1984 is one of my favorite books of all time and its opening line of “It was a bright cold day in April, and the clocks were striking thirteen” is fairly iconic, I never felt like it grabbed me right away. Dickens was good with prosey openers. On the other hand, I find Jane Austen in general a really dry read, but "“It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife” was seemed really funny, so like any classic literature, YMMV.
As for CoG and HG, I particularly liked the openings to the first Lost Heir (“The sky is slashed with jagged tears of fire.”) and Choice of the Deathless (“The sky over the demon world is broken. Lightning licks the strange geometries of cloud.”), though there really are too many good ones to recount them all.