The Extinction Cycle Boxed Set, Books 4–6: Extinction Evolution, Extinction End, and Extinction AftermathNicholas Sansbury Smith4.3
The Extinction Survival Series Box Set: Lost Valley, Satan's Gate, Cost of Survival & Warrior's FateWalt Browning4.5
The Extinction Cycle Boxed Set, Books 1–3: Extinction Horizon, Extinction Edge, and Extinction AgeNicholas Sansbury Smith4.3