Note: With the publication of The Last Space Viking, John F. Carr has continued the story of the Space Vikings as begun in H. Beam Piper's Space Viking. As of August 2011, Carr plans an additional three books in the series, as follows:

1. Space Viking (1963) by H. Beam Piper
2. Space Vikings' Revenge (working title) - future publication
3. Return of Space Viking (working title) - future publication
4. The Last Space Viking (2011) by John F. Carr & Mike Robertson "The Last Space Viking" by John F. Carr and Mike Robertson is a new Space Viking book that takes place a century after the original novel. This work reveals more of the post-Federation worlds and explains the fate of Lucas Trask's League of Civilized Worlds. "The Last Space Viking" explores the future of the Old Federation in the waning days of the Sword-Worlds.
5. Space Viking's Throne (working title) - future publication