We found 3 Reddit comments about Hypersphere. Here are the top ones, ranked by their Reddit score.
You can buy it from Amazon now, it's very expensive since Amazon are greedy as fuck though (it's cheaper from lulu).
Hypersphere by Anon comes close if you read it on a Kindle with the highest brightness settings
4chan did write a book. Or at least /lit/ did. It's called Hypersphere.