Has there ever been a good tie in novel for a computer game? Indeed do they even happen that often? Granted such things usually join TV show tie in novels and prequels in the books I ignore unless I hear they are exceptional list.
You could go the other way and read a novel a game was based on -- STALKER being based on a fairly legendary sci fi novel Roadside Picnic. Metro 2033 also comes to us from an adaptation (and a quick scan says a later book in the series was inspired by a game sequel). The Witcher series is based on what was then a somewhat obscure outside Poland series of fantasy novels. If you are excited about the Cyberpunk 2020 game then it is based on a tabletop RPG but there are a few tie in novels and some adventures that would probably pass muster as free reading material. If you liked Spec Ops The Line a few years back then it was somewhat based on a book (some might say novella) heart of darkness which is odd enough to be public domain and thus linky https://www.gutenberg.org/files/219/219-h/219-h.htm ). If you liked the Jason Bourne films then there were games (I didn't know either) but the books are different in some fairly major ways and I quite liked the ones I read.
The 80s and 90s often adapted books into games, including some very renowned titles.
That said I was curious and it seems wikipedia (I know) served up the goods today https://en.wikipedia.org/wiki/List_of_novels_based_on_video_games
Several authors I recognise in that and have very much enjoyed the works of. Searched for a few of them and goodreads (sort of like IMDB but for books) had something nice to say about several of them.