Godzilla and the Lost Continent was a book that was announced twice but never published due to the publishers losing the rights to publish it.
Godzilla's rest in the pacific ocean is disturbed when a landmass the size of Texas appears in the Pacific Ocean and the countries of the world rush to control it. But when they arrive they discover vast ruins and a small group of survivors of a long lost civilization. But of more concern is that the monsters Varan, Manda, and Battra have made their homes on the lost continent. As the armies roll in the monsters begin to fight them but then flee and a totally new monster appears and destroys all the armies. Now Godzilla is the only hope for the world and the inhabitants of the Lost Continent.