Blizzard built StarCraft: Remastered from scratch. From. Scratch.

Interesting to learn that Blizzard had lost most of the old code and assets for StarCraft, so when it decided to create a 'Remastered' edition they had to go back to basics and build it all again, but to replicate the original perfectly that also meant incredibly detailed efforts to "eyeball everything."

StarCraft Remastered

A very insightful discussion and interview from Ars Technica on just what went into this project and why they decided to do it at all.