Last year, Square-Enix announced a four player co-op game called Moon Diver. It was revealed shortly before E3 and may have been lost is all the hubbub. Moon Diver is 2D side-scrolling, action-platformer that puts players in the tabi boots of four ninjas. The sharp eyes at Silocnera caught new screens that have been appearing on Square-Enix's downloadable game's Facebook page. Many of the screenshots show off some of the ninjas' special moves.
Details are still forthcoming on the exact nature of the multiplayer. What is known is that there will be four player co-op. Whether that's local or online remains to be determined. Judging from the trailer, it does appear that all four players share the same screen.
The plot of the game is ridiculous and bordering on the absurd. From the Moon Diver Wikipedia page:
It is the dawn of the 22nd century on the third planet from the sun. Humanity, broken free from its eschatological thralls, now watches as a lone boy stands before it. Within his hands, he controls the power of Mephistopheles – a force which can breathe life into that which has none. Animated machines devour the helpless; buildings shower the streets with storms of glass; cups, trains, bridges, whole towns – the remnants of civilization are transformed into bloodthirsty beasts whose only purpose is to wield the hammer of judgment.
If that seems like a lot to swallow, wait until you see the trailer. The game looks like a frantic, fast-paced, action-extravaganza. You can be sure that we will bring you more details on co-op when they become available. What is certain is that the game will be downloadable on Xbox LIVE Arcade and the PlayStation Network. The game is slated for a Spring 2011 release in Japan and North America.
Source: Siliconera.com