This is the recommended reading order. All the books take place in the same world, with many concurrent timelines. This is how the events unfold in chronological order, and you’ll often see characters popping in and out of different books.
All the books are standalones unless there’s no gap between titles (ie. Iron Crown, First two books of the Ungoverned Spaces Series).
Iron Rose (Iron & Steel 1)
Exposing Atalanta (Ungoverned Spaces 1)
Exposing Adonis (Ungoverned Spaces 2)
Taming Achilles (Ungoverned Spaces 3)
Tempting Apollo (Ungoverned Spaces 4)
Unleash Hades (Ungoverned Spaced 5)
Queen of the Night co-written with AN Stauber (Black Crown 1)
King of the Dawn co-written with AN Stauber (Black Crown 2)
Four Calling Birds (Mourningkill Book 1)
Iron Blade (Iron Crown 1)
Iron Cross (Iron Crown 2)
Iron Crown (Iron Crown 3)
Protect Your Queen (Barkada 1)
Jokers are Wild (Barkada 2)
King of Spades (Barkada 3)
Knave of Hearts (Barkada 4)
Aces are High (Barkada 5)
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