Tom Clancy's Splinter Cell: Chaos Theory

The game also features many significant changes and improvements to the series' basic gameplay. Chaos Theory is also the first game in the Splinter Cell series to use ragdoll physics.[10]

Chaos Theory features refined stealth mechanics. In addition to the standard light bar, the game also features an aural monitor that measures the noise that Sam makes, along with the ambient noise of the environment. It is important for Sam to make less noise than his surroundings; otherwise, the enemy guards will hear him.

The AI detection has been altered as well. In former titles, after Sam left an area, the game would do a sweep of the previous area for all unconscious or dead bodies in a well-lit spot. If any were found, an alarm would be triggered. In Chaos Theory, the bodies have to be discovered by a patrolling guard or security camera to trigger an alarm. This enables players to leave bodies laying out in the open, and, as long as the player has eliminated all NPCs and disabled all cameras, no alarms will be triggered.

Being spotted by enemies will still trigger alarms, and alarms will still cause enemies to become more alert and combat-ready (such as causing them to wear ballistic vests and helmets). However, triggering too many alarms will no longer cause the game to end automatically. Even killing civilians or friendly soldiers may not cause Fisher to fail the mission, although doing so will at least cause Fisher to be severely chastised by his superior, and cost him significantly in his mission score as well as cancelling some mission objectives, such as tapping phone lines and locating covert listening devices.

Chaos Theory adds a combat knife to Sam's close-quarters combat abilities.[11] Sam can use the knife in multiple ways, such as threatening an enemy during an interrogation, killing an enemy in close-quarters combat, or piercing gas tanks on generators to aid in his stealth operations. Also, it no longer matters what direction Sam attacks from when using melee attacks, nor does it matter if enemies are aware of his presence, as opposed to earlier entries in the series where he had to attack from behind or on the side, and the enemy could not be alerted to him in order to take them down in one hit. Sam also has the option of using lethal or non-lethal force when ending an interrogation, and with his close-range attacks. As an expansion on Sam's ability to shoot while hanging upside down (introduced in Pandora Tomorrow), he can now choke down or break the neck of enemies below him. He can also pull people over railings while hanging off a ledge and throw bodies off of cliffs or over railings, even onto other guards. However, the ability to shoot around corners has been removed, but this is balanced by being able to switch the side of Sam's body the gun is on while in a firing position.

Fisher can choose from one of three different equipment "kits." There is Redding's recommended kit, an assault kit and a stealth kit. Redding's Recommendation gives Sam an even balance between ammunition and non-lethal weaponry. Assault provides more ammunition at the expense of non-lethal weapons while the Stealth kit contains more non-lethal weaponry at the expense of brute force, lethal weaponry, and spare magazines. On missions where an objective is to cause no fatalities, the player is unable to choose the Assault option.

The 5-7 SC Pistol returns, though the laser pointer featured in Pandora Tomorrow is replaced with a new feature: the OCP (Optically Channeled Potentiator).[12] When fired at certain electronics, the OCP can disable them for a limited time. Fisher can disable lights, security cameras, and more. If the device cannot be disabled, it will temporarily malfunction instead, such as causing the blue screen of death when attacking computer towers. When Fisher successfully disables the electronic device he aimed at, a green light appears on the pistol; if he misses, a red light appears. In both cases, Fisher must wait for the OCP to recharge and become ready for use again.

The SC-20K returns with a multitude of new attachments, such as a foregrip that reduces recoil and increases accuracy, a launcher that fires non-lethal weaponry, an under-barrel shotgun attachment for close quarters firing, and a prototype 20mm sniper attachment for long-range combat. The SC-20K now uses a reflex sight that zooms to 1.5x magnification, while the sniper scope allows from 1.5x to 3.5x magnification.

A large variety of non-lethal weaponry can be fired from the SC-20K launcher, such as the Sticky Camera, the Sticky Shocker, the Airfoil Round, and Gas Grenade. The Sticky Camera will reveal an image of the area in which it was shot. It can also make a clicking sound which will attract enemies, and also emit a CS gas that will render unconscious any enemies in the immediate area. In contrast to former titles, Sam can now use multiple cameras at the same time. He can switch back to any Sticky Camera that has not been destroyed by using the CS gas attack or due to enemy fire. The Sticky Shocker will shock and incapacitate its target when fired. If shot into a body of water, the shocker will incapacitate all targets in the water. The Airfoil Round is a hollow metal ring that will knock out the target. It is still possible for an unconscious enemy to die if shot, dropped from a considerable height or dropped into water, no matter how shallow.

Fisher also has multiple types of grenades.[13] There is a gas grenade, which emits a cloud of CS gas that knocks enemies unconscious, a smoke grenade, which provides Fisher with a cloud of smoke to hide in, the flashbang, which will temporarily blind and deafen any enemy near it, and the fragmentation grenade, which will kill any enemy within its blast radius, and send objects flying in all directions.

In June 2007, tensions are running high between China, North Korea, South Korea, and Japan, due to Japan's formation of an Information Self Defense Force (I-SDF). Considering this to be a violation of Article 9 of the post-World War II Constitution, and blaming the I-SDF for information warfare attacks against their countries, Chinese and North Korean forces establish a blockade in the Yellow Sea against Japanese shipping. As Japan is an ally of the United States, and thus the NSA's Third Echelon, the US Navy dispatches a highly advanced warship, the USS Clarence E. Walsh (CG-80), to the Yellow Sea, with hopes that China and North Korea will back down at its presence.

Meanwhile, Sam Fisher is dispatched to a lighthouse on the Talara, Peru coastline, to locate Bruce Morgenholt, an American computer programmer who has been captured by the Peruvian separatist group "The People's Voice", led by Salvadoran revolutionary, Hugo Lacerda. Morgenholt was working on deciphering Phillip Masse's weaponized algorithms, who had been assassinated by Fisher in 2005. The resulting Masse Kernels are being touted as the superweapon of the 21st century. Fisher is tasked with making sure they do not fall into the wrong hands. He arrives too late to prevent Morgenholt's death and fails to stop the release of the Masse Kernels. Fisher boards the Maria Narcissa and assassinates Lacerda. Unknown parties use the algorithms to blackout Japan and the Eastern Seaboard. Japan has previously suffered similar attacks that crashed its economy, and Admiral Otomo of the I-SDF contacts Third Echelon and warns them that North Korea and China are likely responsible.

Meanwhile, following a lead discovered in Panama, Fisher travels to New York to investigate Abrahim Zherkhezi, a man who worked with Morgenholt. He finds that Displace International, a private military corporation owned by his old friend Douglas Shetland, is protecting Zherkhezi. He breaks into the Displace offices and learns of Milan Nedich, a Bosnian arms supplier and war criminal. Fisher finds that Nedich secretly relocated Zherkhezi to Hokkaido. Fisher travels to Hokkaido and meets with Shetland, who claims that Nedich is clean; Fisher infiltrates the hideout that Zherkezi is being held in, kills Nedich, and witnesses Shetland murdering Zherkezi. Shetland escapes and goes underground.

Meanwhile, the US show of force backfires when the Clarence E. Walsh is sunk by a North Korean anti-ship missile on July 4, 2007, bringing North Korea, South Korea, and the United States to the brink of war. Since North Korea claims the missile was launched unintentionally, Fisher is sent to the North Korean missile battery that fired the missile, to determine if North Korea is genuinely responsible for the attack, or if the Masse Kernels are involved. Fisher discovers that North Korea was indeed telling the truth; however, he finds this too late as North Korea launches a full-scale invasion of South Korea. Fisher heads to Seoul and learns that Displace International has orchestrated the war. Displace used the Masse Kernels gained from Zherkhezi to hijack North Korea's missile systems and sink the Clarence E. Walsh to draw the United States into a war from which Shetland could profit, through their status as a leading US-based PMC. Third Echelon sends Fisher to a bathhouse in Tokyo to spy on a meeting between Shetland and Shetland's unknown accomplices, who turn out to be the I-SDF. At the meeting, the I-SDF betray Shetland, and a firefight breaks out between Shetland's soldiers and I-SDF assault troops. Amidst the chaos, Fisher pursues Shetland to the roof. After a standoff in which Shetland tests their friendship against fealty to the US, Fisher kills Shetland.

After Shetland's death, one loose end remains. Otomo has acquired a copy of the Masse Kernels from Shetland and attempts to return Japan to Imperial rule by blackmailing Japanese government officials and senior JSDF officers. He threatens to use the algorithms to launch a North Korean nuclear missile against a Japanese city. Because China would support North Korea, and the United States would back Japan, the incident would most certainly spark World War III. Although Otomo's loyalist I-SDF soldiers manage to fight off the JSDF soldiers sent to stop him, Fisher infiltrates the lowest levels of the I-SDF headquarters and manages to end Otomo's plans. Otomo attempts to commit seppuku, but Fisher saves his life and captures him. Otomo stands trial at the United Nations and takes full responsibility for the entire Korean crisis, returning stability to the region.

The graphics in Chaos Theory feature several improvements, including the addition of normal mapping, HDR lighting, and parallax mapping.[14][15]

Chaos Theory – The Soundtrack to Tom Clancy's Splinter Cell: Chaos Theory is the fifth album by Brazilian electronic music artist Amon Tobin. It was released on January 25, 2005, by Ninja Tune. Seminal composer Jesper Kyd was also hired to score the game's cinematics.[16][17]

The album consists of a collection of songs that Tobin wrote for the game. Ubisoft was so pleased with Tobin's work that they decided to release the album several months ahead of the actual game. In-game music sequences are similar but not identical to the official soundtrack, as most of the in-game music is produced by layering different sequences together. This album showcased the beginning of Tobin's shift from collecting samples from vinyl records to recording his own samples.

For the recording of Chaos Theory – Splinter Cell 3 Soundtrack, Tobin hired a live band whose members ranged from Mexican composer Nacho Mendez to Japanese flutist Eiji Miyake.[18] In the liner notes of the CD, Tobin noted that "it was a real special session" to have Mendez, Eiji, and the Modugno brothers working on the album.[19] Tobin would more fully explore the use of his own samples by using field recordings in the following 2007 album, Foley Room.

Tom Clancy's Splinter Cell: Chaos Theory was a commercial success, selling 2.5 million copies by the end of March 2005.[82]

The Xbox and PC versions of Chaos Theory received "universal acclaim", and the PlayStation 2, N-Gage and GameCube versions received "favorable" reviews, while the 3DS and DS versions received "mixed" reviews, all according to video game review aggregator Metacritic.[4][5][6][7][28][29][30] A 2013 IGN review described Chaos Theory as a "peak" in the series.[83] Shawn Elliott of 1UP.com gave the Xbox version an A and said that it "isn't the cruel, ball-busting taskmaster of Splinter Cells past—the exacting details don't matter so long as the duties get done, and it's a better game because of it."[84] Rob Semsey of TeamXbox gave the game 9.8 out of 10 and said, "The formula has been tweaked to an almost perfect mix of story and engrossing gameplay that still requires more use of brain over brawn... The presentation is off the charts with mesmerizing visuals and audio production, both of which have a major impact on how you play."[85] Edge gave the game a score of eight out of ten and said it was "the game that the original Splinter Cell was meant to deliver: a tight play experience within a trusty framework, one more of enjoyment than irritation, and a game that's no longer exclusively for fans of repeated reloading."[86] In Japan, Famitsu gave the Xbox version a score of three eights and one seven, bringing it to a total of 31 out of 40;[87] for the PS2 version, the same magazine gave it two eights, one seven, and one six, bringing it to a total of 29 out of 40.[87]

Avery Score of GameSpot gave the mobile version a score of 8.6 out of 10 and called it "a terrific game in its own right, even if it doesn't stray far from the established formula."[88] Likewise, Levi Buchanan of IGN gave the same version a score of 8.8 out of 10 and said it was "definitely not a one-touch game. It's complex, but Gameloft's control scheme and pacing compensate for the limited input of a handset. Gameloft rarely stumbles with their offerings, and Chaos Theory is no exception. When it pops up on your deck, download it. Your may get that familiar feeling, but that's certainly oodles better than that rot-gut anger you feel after downloading a stinker."[89]

Non-video-game publications gave the game some favourable reviews. Maxim gave the game a perfect ten and stated: "No longer is there just one way to solve a treacherous night mission before the enemy picks up your audio signature: stealth will pay off just as well as good old-fashioned ultraviolence."[90] The Sydney Morning Herald gave the Xbox, PC and PS2 versions all five stars and called it "Visually spectacular and hugely rewarding."[78] However, the same newspaper also gave the DS version half of that score (two-and-a-half stars) and said that the frustration "is compounded by the choppy, stuttering frame rate of the 3D visuals, making the already convoluted controls feel twice as sluggish. Even the menu screens seem slow to respond - a sure sign that the DS is being pushed beyond its capabilities."[79] The New York Times gave the game a favourable review and stated that "Perhaps Sam is just getting older, perfecting his skills while losing some feistiness. His games are following the same path, with increasingly sophisticated, deep gameplay but a little less flair."[91] Jim Schaefer of Detroit Free Press gave the Xbox version three stars out of four, stating, "I'll reserve a four-star rating for the next time this series takes big leaps. In this latest edition, there's nothing so new that you'll stop and say, 'Whoa.' But Chaos Theory is true to the things that make Splinter Cell games so good."[77]

Because this game depicts a war between North Korea and South Korea, it was banned in South Korea until 2006.

Chaos Theory was a finalist for PC Gamer US's "Best Action Game 2005" and "Best Multiplayer Game 2005" awards, which ultimately went to F.E.A.R. and Battlefield 2, respectively.[92]

Wikiquote has quotations related to: Tom Clancy's Splinter Cell: Chaos Theory

• Official website via Internet Archive
• Tom Clancy's Splinter Cell: Chaos Theory at MobyGames
• Tom Clancy's Splinter Cell: Chaos Theory at IMDb