1632 Universe/Ring of Fire
1632 Universe/Ring of Fire is a 25-book series with 25 primary works first released in 2000 with contributions by Eric Flint, David Weber, Virginia DeMarce, Andrew Dennis, Charles E. Gannon, Gorg Huff, Paula Goodlett, David Carrico, Kerryn Offord, Rick Boatright, Griffin Barber, and Iver P. Cooper.
2000 • 47 Readers • 553 pages • 3.9
2004 • 7 Readers • 722 pages • 3.6
2002 • 13 Readers • 673 pages • 3.8
2007 • 7 Readers • 1,072 pages • 2.7
2007 • 3 Readers • 2.5
2016 • 2 Readers • 4.5
2008 • 1 Reader • 848 pages
2006 • 1 Reader • 496 pages
2008 • 1 Reader
2009 • 1 Reader • 355 pages
2012 • 1 Reader • 827 pages • 3
2010 • 3 Readers • 3.7
2011 • 2 Readers • 4.5
2012 • 2 Readers • 408 pages • 4.5
2016 • 1 Reader • 5
2014 • 2 Readers • 3.5
2017 • 1 Reader • 4
2013 • 1 Reader • 5
2014 • 1 Reader • 361 pages • 2
2016 • 1 Reader • 4
2016 • 1 Reader • 3
2017 • 1 Reader
2017 • 1 Reader • 5
2019 • 1 Reader
2004 • 1 Reader • 362 pages • 3