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Official Trailer
Game Information
Platforms
Xbox 360 and Windows PC.
Release Dates
November 2007 for Xbox 360 and June 2008 for PC.
Wikipedia
Mass Effect is an action role-playing game developed by BioWare for the Xbox 360 and then ported to Microsoft Windows by Demiurge Studios.
It is set in the year 2183 AD. Thirty-five years prior, humanity discovered a cache of technology on Mars, supposedly built by a technologically advanced but long-extinct race called the Protheans. Studying and adapting this technology, humankind has managed to break free of the solar system and has established numerous colonies and encountered various extraterrestrial species within the Milky Way galaxy. Utilizing alien artifacts known as Mass Relays, the various space-faring races are able to travel instantly across vast stretches of the galaxy. Within the game, humanity has formed the Human Systems Alliance, one of many independent bodies that make up the collective of "Citadel space".
The player assumes the role of an elite human soldier named Commander Shepard, who commands the experimental SSV Normandy alongside Captain Anderson. The Normandy is sent to the human colony world of Eden Prime to recover an unearthed Prothean beacon. To assist in recovering the beacon, the Citadel Council, the galaxy's primary governing body has sent one of their top agents, a turian "Spectre", named Nihlus. A small team consisting of Nihlus, Shepard, biotic Kaidan Alenko, and the quickly-killed Corporal Jenkins, who is replaced by Gunnery Chief Ashley Williams, discover that the Eden Prime colony is under attack by alien synthetic life-forms known as the geth, led by a rogue turian Spectre named Saren Arterius, who kills Nihlus. After the battle ends, Shepard locates the beacon and receives a vision. While initially struggling to understand the vision, it turns out to be images of biological creatures being slaughtered by machines.
Screenshots
Two years later...

Countdown
North America
Europe

Official Trailer
Game Information
Platforms
Xbox 360 and Windows PC.
Release Dates
January 26th 2010 in North America and January 29th 2010 in Europe.
Save Files
Provided you keep your save game files, the decisions you made in the previous instalment will affect the characters, the politics and the universe in Mass Effect 2.
Digital Rights Management (DRM)
The boxed/retail PC version of Mass Effect 2 will use only a basic disk check and it will not require online authentication.
System Requirements
OS: Windows XP SP3 / Windows Vista SP1 / Windows 7
Processor: Minimum - 1.8GHz Intel Core 2 Duo or equivalent AMD CPU, Recommended - 2.6+ GHz Cure 2 Duo Intel or equivalent AMD CPU
Memory: 1 GB RAM for Windows XP / 2 GB RAM for Windows Vista and Windows 7
Video Card: Minimum - NVIDIA GeForce 6800; ATI Radeon X1600 Pro, Recommended - NVIDIA GeForce 8800 GT; ATI Radeon HD 2900 XT; or better.
Direct X: DirectX 9.0c August 2008 (included)
Sound Card: DirectX 9.0c compatible
Hard Drive: 15 GB
DVD ROM: 1x Speed
Editions
Regular Edition,
Collectors' Edition: Contains Collectors' Armour and Rifle, art book, first issue of ME: Redemption comic book, 'Making of' and behind the scenes videos.
Terminus Armour: Pre-order at Gamestop,
Inferno Armour: Pre-order at various retailers,
Collectors' Armour: Included with Collectors' Edition.
Screenshots
Videos