Halcyon Days: Interviews with Classic Computer and Video Game Programmers is a digital book edited by James Hague and published in 1997.

[1][2] The book was originally formatted using HTML and sold via mail-order, shipped on a floppy disk by Dadgum Games for USD $20.

[1][4] The book continued to be sold by Dr. Dobb's Journal, on a CD-ROM also containing Susan Lammers's Programmers at Work,[5] until Dr. Dobb's shut down at the end of 2014.

The introduction to Halcyon Days is written by John Romero[6] who told Wired News the interviews were "like hearing messages from old gods.

"[7] Halcyon Days has since become a common reference for writings on game history, including Racing the Beam (MIT Press, 2009),[8] and Retrogame Archeology (Springer, 2016).