Players will have nine game modes to choose from, including Action, the mission-based single-player game; Challenges, a series of single-player challenges to complete; Custom, where players can set the parameters of a fight; Versus, the classic one-on-one melee battle; and many more. The game also includes mini games, including rail-type arcade sequences. In the single-player game, G-Force scientists have cracked Godzilla's genetic code from samples obtained during the Vortaak invasion. Scientists have refined the code to grow super-enriched "Godzilla-Matter" - a virtually indestructible substance with the exact physical properties as Godzilla's radioactive back spikes. The Vortaak learn of the Godzilla Matter and strike Monster Island in an attempt to steal G-Cells and seize control of Earth's monsters. As Godzilla, the player awakens and fights to stop the UFOs from stealing G-Cells, and to free his fellow monsters from captivity. Throughout the game's missions, Vorticia sends waves of monsters, UFOs, mind-controlled military and earth-threatening devices at Godzilla, who must fight to defeat the enemies and find the hidden G-Cells before the UFOs can steal them. The epic battle for Earth will range across the globe in more than a dozen massive, destructible city environments, including San Francisco, Los Angeles, Tokyo, Osaka and New York. Environments have been enhanced and enlarged, featuring hills, oceans, harbors and mountains. All structures in the game have advanced destruction mechanics, enabling them to be partially damaged or completely destroyed through multiple impacts. Striking larger buildings will produce dynamically generated gouges that expose the internal skeletal structure before they eventually crumble to the ground. Both the PlayStation 2 and Xbox versions will feature a variety of online multiplayer options for up to four players where gamers can smash, bash and trash opposing monsters and cities in gargantuan online melees. Player will be able to go head-to-head, three- or four-player free-for-all, or team up for two-on-two combat. Godzilla will face off against more than 18 classic Toho movie monsters, each carefully designed to recreate the authentic film look and feel. Monsters include Godzilla 2000 and 90s, King Ghidorah, Gigan, Mothra, SpaceGodzilla, Biollante and many more.