It also changed my perception of both John Carmack and John Romero. The latter sometimes gets picked on for not being the engine guy and for Daikatana, but Johnwas writing level editors, compression apps, and massive amounts of tooling work allowing Carmack to focus exclusively on the engine. He also waded through a flooded lake to get to work one day.

I wish I could go back and read that book for the first time again.

It's on Audible as well, narrated by Wil Wheaton. I've been doing a lot of driving recently and it was a fantastic listen.

PS that was what inspired me to post, i just finished the book and started to wonder what language did he code that in?

I finally read it last year and I agree it's excellent. One of the best non-fiction books I've read.