The Fallen Fortress
by R. A. Salvatore
series The Cleric Quintet
genres Science
years 1993
A Mighty Fortress
by David Weber
series
genres Science
years 2010
The Black Fortress
by E. G. Foley
series The Gryphon Chronicles
genres Other
years 2019
Love's Fortress
by Samantha Kane
series
genres Other5
years 2010
Vader's Fortress
by Rebecca Moesta
series
genres Other5
years 1993
The Ruby Fortress (Kingdoms Of Oz Book 1)
by Carrie Whitethorne
series
genres Other5
years 2019
A Mighty Fortress
by S. D. Thames
series
genres Other5
years 2016
The Impossible Fortress
by Jason Rekulak
series
genres Other5
years 1994
The 9th Fortress
by John Paul Jackson
series
genres Other6
years 1999
The Dead Fortress: A LitRPG Epic (World of Samar Book 3)
by LitRPG Freaks
series
genres Other6
years 2017
Sharpe's Fortress s-3
by Бернард Корнуэлл
series Sharpe
genres Other6
years 1988
Storm the Fortress
by Maxine Trottier
series
genres Other8
years 2013
Shadow Ops: Fortress Frontier-ARC (pdf conv.)
by Myke Cole
series
genres Other8
years 2013
A Mighty Fortress
by H. A. Covington
series
genres Other8
years 2005
The Ice Fortress
by Hannah Ross
series Frozen World
genres Other8
years 2018
The Eternal Fortress (Star Legions Book 6)
by Michael G. Thomas
series
genres Science
years 2014
The Starlight Fortress
by Fiona Rawsontile
series
genres Other9
years 2013
6: Broken Fortress
by Ginn Hale
series The Rifter
genres Other9
years 2011
Hell's Fortress
by Michael Wallace
series Righteous
genres Other9
years 2014
The Winter Fortress
by Neal Bascomb
series
genres Other10
years 1995