War of the Twins has 411 pages.
Time of the Twins has 421 pages.
Test of the Twins has 330 pages.
The Daring Twins has 317 pages.
The War of the Worlds has 303 pages.
The Forever War has 236 pages.
The Parafaith War has 480 pages.
The River War has 1000 pages.
The Uplift War has 506 pages.
Wisdom of War has 320 pages.
Wizards at War has 560 pages.
Highways to a War has 450 pages.
Metaphysics of War has 171 pages.