From the website:
"A computer mystery/romance set five minutes into the future of 1988.

I can guarantee at least ONE of the following is a real feature:
Discover a vast conspiracy lurking on the internet!
Save the world by exploiting a buffer overflow!
Get away with telephone fraud!
HACK THE GIBSON!

Which one? You'll just have to dial in and see. Welcome to the 20th century."

I saw someone mentioning Analogue: A Hate Story in some old posts but no mention of this visual novel which is made by the same person and is listed as a prequel to Analogue on the Visual Novel Database. I played it earlier today and it took about 2 and a half hours to finish. It's free and I really enjoyed it so you should give it a try.

Just played through, loved it, and would recommend it to anyone else, though it can be a bit of a tear jerker at the end

Digital has a really nice feel to it, and definitely ranks in my top ten visual novels of all time.

so many feels, good puzzles too, I just wish I could have done more to help her.