Crackdown is an open world, third-person shooter video game for the Xbox 360. Set in the fictional Pacific City, the player controls a biologically enhanced Agent, tasked with defeating three crime lords and their organized crime syndicates.

Crackdown 2 takes place 10 years after the events of Crackdown. After "saving" Pacific City, there was a short time of peace. Then, according to the Agency, a new medical student named Catalina Thorne was accepted into the Agency as a scientist. However she was found to have been performing her own unauthorized experiments and was kicked out. Afterwards, her life was ruined, with her blaming the Agency. Later, she broke into the Agency cloning facility which housed the original agents, and introduced a virus into them which mutated the already genetically modified Agents, who became mindless and enraged, going on a killing spree before dying hours later. She then went on to destroy the research labs, sending the project back to square one and single-handedly destroying the Agent program.

Metal Gear Solid follows Solid Snake, a soldier who infiltrates a nuclear weapons facility to neutralize the terrorist threat from FOXHOUND, a renegade special forces unit. Snake must liberate two hostages, the head of DARPA and the president of a major arms manufacturer, confront the terrorists, and stop them from launching a nuclear strike. Cinematic cutscenes were rendered using the in-game engine and graphics, and voice acting was used throughout the entire game.

Perfect Dark is set in 2023 against the backdrop of an interstellar war between two races: the Maians, who resemble the archetypal grey alien, and the Skedar, reptile-like extraterrestrials who use a holographic disguise to appear as Scandinavian humans, bearing similarities to Nordic aliens. Using this disguise, they can interact with humans on Earth without looking too overtly suspicious. Meanwhile, on Earth, there is an ongoing rivalry between two factions: The Carrington Institute, a research and development center founded by Daniel Carrington that secretly operates an espionage group in league with the Maians; and dataDyne, a defence contractor corporation headed by Cassandra De Vries that secretly maintains a deal with the Skedar: in exchange for creating an AI capable of cracking an ancient alien spacecraft buried on the ocean floor, the Skedar have agreed to supply them with enough alien technology to become the biggest corporation on Earth.

Perfect Dark Zero is set in 2020 where a large percentage of the world is controlled by corporations. The most notable of these corporations are dataDyne, headed by Zhang Li, and the Carrington Institute, headed by Daniel Carrington. The player is cast as Joanna Dark, a bounty hunter working with her father Jack Dark and computer hacker Chandra Sekhar. The team is after Nathan Zeigler, an independent researcher who has been captured by a Hong Kong triad gang led by a man named Killian. Joanna and her father successfully rescue Zeigler, but Killian manages to escape. Zeigler explains that Killian was trying to obtain his research, which contains information about a dangerous weapon. As Zeigler refuses to go anywhere without his research, Joanna is sent to retrieve it while her father stays with Zeigler. After Joanna retrieved a case with Zeigler's research from a nearby safe house, Zeigler takes a device called neurodrive from the case and uses it to implant his research data into Jack's mind. Afterwards, Zeigler succumbs to his injuries sustained by Killian and dies. Before dying, Zeigler says that they must find a scientist named Dr. Eustace Caroll.

Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay. The game is designed to change the way players approach, manipulate, and surmise the possibilities in a given environment; similar to how Half-Life 2's Gravity Gun innovated new ways to leverage an object in any given situation.Players must solve physical puzzles and challenges by opening portals to maneuvering objects, and themselves, through space.

The game is set in futuristic computer "supernetwork" called Project-K where much of the data flow is controlled by an AI named Eden. Eden has become overwhelmed with the amount of knowledge gathered on the network, causing her to doubt her existence and enter a shutdown sequence, which would create catastrophic problems everywhere should she be able to complete this.

Before the Dawn of the Æsir, the great machines called the "Children of Ymir" stalked Earth, bent on destroying humanity. As the war escalated, man and machine exchanged nuclear and anti-matter weapons, leaving a once-lush world frozen in a thousand-year winter. Humanity now teeters on the brink of extinction. Earth's population is now only a few million sheltered in the walled enclave of Midgard. The great sentient machines have prospered in the eternal winter. Humanity, however, is not alone. They pray to the Æsir and faithfully worship the great Organically Distributed Intelligence Network. As protectors, it is the Æsir's duty to ensure humanity survives. Their cybernetically-enhanced bodies and minds make them far more powerful than mortals, and they are properly revered as gods.