Perfect Dark Zero

Perfect Dark Zero is a first-person shooter where players control the player character mostly from a first-person perspective. The combat features mechanics such as an evasive dodge roll and a cover system in which the gameplay switches to a third-person perspective, allowing the player to aim strategically without taking damage and be more aware of the surroundings. Players cannot jump but have the ability to automatically climb obstacles as long as they can reasonably reach them. It is also possible to climb ladders.

When doing so the camera shifts into a third-person perspective. The player has a certain amount of health which decreases when attacked by enemies. The health can recharge a bit if the player steps out of the line of fire for a few seconds, but it may not necessarily refill completely depending on how much damage the player took.

Perfect Dark Zero is set in an alternate 2020, where a large percentage of the world is controlled by corporations. The most notable of these 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 and computer hacker Chandra Sekhar. The team is after Nathan Zeigler, an independent researcher who has been captured by a Hong Kong triad leader named Killian.

Joanna and her father 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 from a case in a nearby safe house. Zeigler then takes a device called a neurodrive from the case and uses it to implant his research data into Jack's mind.

Development of Perfect Dark Zero began on the GameCube with a very small team of roughly ten people. At the time, Nintendo had a 49% stake in Rare, making the company a Nintendo second-party developer. According to lead designer Chris Tilston, "it was basically prototyping, finding out where we could go and how we could get there". When Rare was purchased by Microsoft in 2002, the project was transferred to the Xbox console and the game's multiplayer mode was redesigned for Xbox Live online play.

Tilston revealed that at one point they got to 50 players online simultaneously, but the graphics "just couldn't handle it". Since the initial version of the game pushed the original Xbox hardware "pretty hard", the project was ultimately transferred to the Xbox successor, the Xbox 360. Tilston revealed that the original Xbox version was "about 12 months away" from completion when the shift occurred.

Perfect Dark Zero received generally positive reviews from critics. Writing for GameSpot, Greg Kasavin felt that Perfect Dark Zero "champions the Xbox 360 with its excellent assortment of single and multiplayer game types, as well as its incredible good looks and dynamic, intense action". He concluded that the game "delivers just about everything you could hope for from a first-person shooter". Charles Onyett of IGN praised the game's replay value, but also criticised single-player aspects such as the weak artificial intelligence of enemies, commenting that "they never display any advanced assault tactics".

The graphics were highlighted positively. Kasavin was impressed with the amount of lighting and motion blur effects, and noted that the "excellent character animation helps make the guns feel as powerful as they look". Bryn Williams of GameSpy considered the graphics as a "stunning look at what the 360 hardware is capable of", but also admitted that the animation "is a little too slow and sometimes creates an unwelcome sense of cartoonishness". IGN credited the attractive gun models, explosions, and sprawling vistas, but felt that some areas such as the South American Ruins can unnecessarily look too shiny. The game's audio was said to feature "heavy-hitting weapon effects [and] fantastic, moody soundtrack that gives each mission its own pulsing rhythms".