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Overview:

2012 . Pax Omega (2012, Al Ewing, Abaddon Books, ISBN-10: 9781849973489, , pages, ebook, Collection)
2012 . Pax Omega (2012, Al Ewing, Abaddon Books, ISBN-10: 9781907992902, £7.99, 266 pages, Trade Paperback, Collection)
2012 . Pax Omega (2012, Al Ewing, Abaddon Books, ISBN-10: 9781907992919, $9.99, 266 pages, Trade Paperback, Collection)
2017 . The El Sombra Trilogy (2017, Al Ewing, Abaddon Books, ISBN-10: 9781786180575, £7.49, pages, ebook, Omnibus)
2017 . The El Sombra Trilogy (2017, Al Ewing, Abaddon Books, ISBN-10: 9781781084991, $15.99, 624 pages, Trade Paperback, Omnibus)
2017 . The El Sombra Trilogy (2017, Al Ewing, Abaddon Books, ISBN-10: 9781781084991, £10.99, 624 pages, Trade Paperback, Omnibus)