Sly Cooper and the Thievius Raccoonus
Sly Cooper is the youngest in a long line of master thieves. When he was a young boy, a gang called the Devilish Five killed his family and divided up their book on the art of thievery: the Thievius Raccoonus. Sly must defeat all the members of the gang to get the book back, and at the same time escape Carmelita Fox, a policewoman who is chasing him around the world to arrest him. The game is divided into five worlds, each of which revolves around a specific part of the world and the villain that resides there. Most of the worlds are built as a central hub with entrances to numerous individual levels. Each level has a main objective, for which you'll get a key. You'll have to collect all the keys in the world to fight against the world's boss. Many of the levels are built as platformers. The goal of these worlds is to reach the place where the key is located. There are many stealth elements here, since you'll have to dodge searchlights and triple lasers that trigger an alarm, and avoid alerting guards. Besides the main objective, there are also clue bottles to find. If you find all the clues in a level, you'll be able to open a safe with a page of Thievius Raccoonus, which will give you a new ability. Once you get this, there is also a master thief sprint where you have to get from the beginning of the level to the exit within a time limit.
Story
Sly Cooper comes from a long line of master thieves (the Cooper clan) who only steal from other criminals and thus turn to vigilante justice. The Cooper family heirloom, an ancient book called "The Thievius Raccoonus", records all the secret tricks and techniques of each member of the clan. On his 8th birthday, Sly was supposed to inherit the book and learn all the ancient secrets of his family that would help him become a master thief. However, a group of thugs called "The Fiendish Five" (led by Clockwerk, the arch-enemy of the family clan) raided the Cooper household, killed Sly's parents and stole all the pages of Thievius Raccoonus. After that, the ruthless gang goes their separate ways to commit dastardly crimes all over the world. Sly is sent to an orphanage, where he teams up with two boys and forms a gang that will become his lifelong best friends: Bentley, a technician, inventor and gifted mathematical hacker with encyclopedic knowledge, who plays the role of the gang's brain, and Murray, a huge husky cowardly guy with a gigantic appetite, who plays the role of the gang's muscleman and getaway driver. The three leave the orphanage together at age 16 to begin their lives as international vigilante criminals, calling themselves "The Cooper Gang." Sly vows to one day avenge his family and track down the Inhuman Five and steal back the Thievius Raccoonus. Two years later, the Cooper Gang heads to Paris to infiltrate the Itnerpol (a police headquarters) to find the secret police file that holds details and information about the Inhuman Five, but during the heist they are ambushed by Inspector Carmelita Fox (to whom Sly is romantically attracted). The gang manages to steal the police file and escape from her and the other cops. With the secret police file in hand, the Cooper gang manages to track down the Five Inhumans.