Metroid: Other M

Metroid: Other M is a new Metroid game announced by Nintendo at E3 2009, developed by Team Ninja and Nintendo. Taking place between Super Metroid and Metroid Fusion, Other M is said to feature a similar storytelling style to Fusion while retaining the "traditional Metroid feel". It will not make use of the Wii MotionPlus, because the peripheral did not contribute to the gameplay design. The designers are putting an emphasis on adventure, and aim to have a "seamless and natural" interaction between gameplay and cinematics. 

Trailer
The trailer demonstrates combat and movement mechanics in third-person, with first person segments for ranged attacks. It featured Ridley, Mother Brain, Adam Malkovich and of course Samus Aran. Recurring creatures include a swarm of Reos and a type of Space Pirate that has only been seen in Metroid Fusion and the 2002 Metroid manga. The trailer is now appearing in the Nintendo Channel, along with several other previews and trailers for other games.

Samus is seen wearing both the Varia Suit and another with the Power Suit's coloration during the trailer. Samus appearance in both suits varies from her traditional design. Suit upgrades seen include the Power Beam, Varia Suit, Charge Beam, Missiles, Ice Beam, and Speed Booster. This adventure sees Samus making heavy use of dynamic melee attacks, along with her usual abilities.

Plot
According to Yoshio Sakamoto and Yusuke Hayashi, the game takes place between Super Metroid and Metroid Fusion. The blonde woman in the trailer is not "a second Samus" of any kind, but another "very, very important character". What happened to Adam will probably be revealed in this game since he wasn't present in a physical form in Fusion. The "Living body arms development lab" is the only new named location, thus far. Cutscene segments show a Galactic Federation base as well as Tourian. 

Name
The title of Metroid: Other M is abbreviated to "MOM", and the subtitle is an anagram for "Mother", strengthening this game's connection to Mother Brain (who appears in the trailer) as well as other possible maternal themes from the series history.

It also may also refer to an infamous line from the end of Metroid: "THE GALAXY MAY BE INVADED BY THE OTHER METROID. PRAY FOR A TRUE PEACE IN SPACE."

Yoshio Sakamoto, the co-creator of Metroid, confirmed that the name will have significance in several instances, indicating that Other M is the final title.

Video

 * Nintendo.com
 * GameTrailers (420p, poor sound)
 * GameVideos
 * IGN (Poor sound)