To this day I consider TONC (https://www.coranac.com/tonc/text/ https://www.coranac.com/tonc/text/) to be the greatest software project I have ever worked with.

To this day I consider TONC (https://www.coranac.com/tonc/text/ https://www.coranac.com/tonc/text/) to be the greatest software project I have ever worked with. It touches everything you need to develop games for the GBA. The documentation is awesome on many levels. The book is great. I am just thankful that I found it when I was younger as that introduced me to a whole lot of critical knowledge.