via IGN

SEGA of America is excited to reveal all of the extremely powerful suits that are playable and unlockable in the upcoming video game - Iron Man! Iron Man, a commanding Super Hero who built his greatest weapon- his suit - is on a mission to protect the world from the weapons he helped to create. Over the course of his epic career, brilliant scientist Tony Stark has created a variety of suits for his alter-ego Iron Man, several of which are available in the game due out on all platforms on May 2, 2008. Read below for some info on the various suits that will be in the game:

MARK I

This is the very first Iron Man suit ever built. In a life changing moment, Tony Stark is attacked and captured by terrorists. While being held captive, Tony is forced to build a weapon of mass destruction. With the help of Yinsen, Tony builds the Mark I suit instead and uses it to escape. Thus, a new Super Hero is born: IRON MAN!

MARK II

The Mark II was constructed as a prototype with an emphasis on exploring flight potential. As the first suit of Iron Man armor built at Stark Industries, the Mark II armor was soon replaced by the Mark III after initial flight testing.

MARK III

This is the main suit Iron Man uses in the game and film. After initial flight tests were completed on the Mark II, Tony built the Mark III. Designed for customization, the Mark III armor can be equipped with a variety of enhancements and upgrades.

Unlockable Suits:

Classic

First debuting in "Tales of Suspense #48", the suit that would become known as the iconic Iron Man armor underwent several subtle cosmetic changes before the look was finalized in "Tales of Suspense #66". Some of the major features of the suit were the first implementation of the palm mounted "Repulsor Rays", ultra fine microscopic integrated circuitry that made the suit easier to control, and boot thrusters that enabled the wearer to fly for greatly sustained speeds and distances. Appearing in well over 200 issues of Iron Man's comic adventures, this suit is easily the most recognizable suit in Iron Man's arsenal.

Extremis

First appearing during the "Extremis" story arc that ran from Iron Man Vol. 4 Issues 1-6, this armor has become the most prevalent look for the modern day Iron Man. This is the defining suit that Tony Stark has worn during major events such as "Civil War" and "World War Hulk". In this armor, Iron Man has hit new levels of power.

Hulkbuster

The name says it all. In order to be ready for possible combat with the rampaging monster known as "The Incredible Hulk", Tony Stark developed this suit of armor as the ultimate add on to the Iron Man suit. The first version of Iron Man's Hulkbuster armor appeared in Iron Man #304 and enabled Iron Man to lift up to 175 tons as well as provide enough durability to withstand repeated blows from the Hulk.

Classic Mark I

The first Iron Man suit ever created. Built during Iron Man's first appearance in "Tales of Suspense #39", the suit functioned both as a life saving device for Tony Stark's injured heart and as a weapon to help him escape captivity. While reinterpreted by different artists, this design is based from the original version of the suit designed by Jack Kirby and Don Heck.

Platform Specific-Suits:

Silver Centurion- X360 Only

Originally used as a means by which Tony Stark could test out new ideas for the Iron Man suit, it eventually became his new fully operational set of armor when used in the first comic book battle between Tony Stark and Obadiah Stane in Iron Man issue 200. Boldly sporting new colors, this version of the suit was worn during Stark's days as a West Coast Avenger and during the first "Armor Wars" storyline.

Ultimate- PS3 Only

In the Ultimate Universe, an alternate version of the Marvel Universe, Tony Stark requires the help of an entire specialized crew to help maintain this bulkier Iron Man armor. As seen in The Ultimates, this ensemble functions more like a compact vehicle than a man-sized suit of armor.