Robert Spire
1 Tipping Point (2011)
2 Impact Point (2012)
3 Melt Zone (2014)
4 Cataclysm of the Ancients (2015)
5 CRYPTO (2020)
6 The Galileo Project : Conspiracy (2020)
7 The Galileo Project: Countdown (2021)
8 The Galileo Project: Disclosure (2021)
9 The Vanished (2023)
2 Impact Point (2012)
3 Melt Zone (2014)
4 Cataclysm of the Ancients (2015)
5 CRYPTO (2020)
6 The Galileo Project : Conspiracy (2020)
7 The Galileo Project: Countdown (2021)
8 The Galileo Project: Disclosure (2021)
9 The Vanished (2023)
Omnibus editions
Tipping Point / Impact Point (2014)
Spire Box Set Novels 4-6 (2021)
The Galileo Project Trilogy Box Set (2022)
Spire Box Set Novels 4-6 (2021)
The Galileo Project Trilogy Box Set (2022)