Sierra began in 1979 as On-Line Systems. It was founded by husband and wife Ken and Roberta Williams. In 1982 the company was renamed Sierra On-line. Sierra was sold to CUC International in 1996, who merged with HFS Incorporated to form the Cedant Corporation in 1997. In 1998, Cedant sold it's computer entertainment division to Havas S.A. In 1999, Vivendi took over Havas. In 2008, Vivendi merged with Activision to form Activision Blizzard (after the company Blizzard, which was owned by Vivendi). Games are no longer developed under the Sierra label. Re-releases of Sierra titles are now published under the Activision label.

Adventure Games by Sierra:
1999

Gabriel is tasked with protecting the son of Prince James from vampire-like creatures called Night Visitors.

1998

Everyone in Daventry has been turned to stone, leaving only a simple tanner to save the kingdom.

The hero enters a contest to become king of Silmaria, but an assassin is killing off all of the contestants.

1997

A hotel guest's friends have been captured and they can only be freed by collecting 12 prayer sticks called Bahos.

1996

While on a cruise ship, Larry has to cheat to win a weekly contest held by Captain Thygh.

A man experiences hallucinations while his co-workers are being killed, leading him to wonder if he's doing the killing.

1995

Gabriel inherits a castle in Germany. Once there, he investigates the apparent werewolf-related death of a little girl.

A writer named Adrienne Delaney moves into a mansion where a demon possesses her husband's body.

A teenager is dared by his friends to spend the night inside of a haunted museum.

Roger resumes his role as a janitor, but it's not long before he stumbles into another adventure.

Torin, a son of a farmer on the planet Strata must rescue his family and defeat the evil sorceress Lycentia.

1994

Separated, mother and daughter must find each other and save the kingdom of Eldritch.

1993

Freddy Pharkas must discover who is scaring away all of the land owners in Coarsegold and put a stop to it.

Gabriel Knight finds out about his Schattenjäger heritage, and is tasked with stopping a series of voodoo killings.

Larry wins a trip to the health spa La Costa Lotta, where he tries to win over the available women there.

Adam explores the rainforest for a cure for a disease affecting the local natives.

Pepper follows her dog into a time portal and must undo all of the changes to the timeline.

Los Angeles homicide detective John Carey investigates a serial killing where his ex-partner was one of the victims.

The hero arrives in the dark caves of Mordovia where he must keep a demon spirit from entering the world.

When Roger is promoted to captain, he finds his first assignment is much more dangerous than he anticipated.

1992

Robin Hood steals money for King Richard's ransom, while staying away from kingdom guards.

Laura must discover who is killing all of the people at an Egyptian exhibit in New York City.

Solve the security puzzles on Dr. Brain's island in order to retrieve an invention for him.

Alexander sets sail for the Green Isles in search of the beautiful Princess Cassima.

The hero must unite and lead the warring tribes in a battle against a demon wizard.

1991

Solve all of the puzzles in order to become the assistant to the mad-scientist Dr. Brain.

Adam and Delphineus seek the whale king of the underwater kingdom of Eluria.

An amnesiac Larry searches the USA for girls to star in a TV show and tries to regain his memory.

In this game aimed at children, fairy tales are mixed up and you have to fix them.

Detective Sonny Bonds' investigation becomes personal when his wife is stabbed.

Roger travels through time to try to avoid being captured by an old enemy.

1990

King Arthur goes on a quest to rescue his knights and find the holy grail.

Search for and defeat an evil wizard who has stolen your castle and your family.

In this adventure/RPG hybrid, travel to Raseir to resurrect a powerful magical being.

1989

A navel officer is sent to Tunisia to rescue a US ambassador in order to prevent war.

A college student named Laura Bow must find out family secrets to uncover a murderer.

After getting dumped again, Larry travels to a tropical island where he meets his dream woman.

Work with the aliens while secretly working to get rid of them.

Detective Sonny Bonds must rescue his girlfriend and once again capture the Death Angel.

An adventure/RPG hybrid where you must battle monsters and solve quests to become a hero.

Rescue the two guys from Andromeda from the evil ScumSoft corporation.

1988

Sell your home in New York and head out to Gold Rush-era California to strike it rich.

Travel to the kingdom of Tamir to save a fairy and find a magical fruit to heal your dying father.

Larry gets dumped, goes on a cruise to score with women, and ends up in the middle of a KGB plot.

In a future where Earth has been invaded by aliens, try to overthrow them and save humanity.

1987

A loser hits on women all night before he finds one that will sleep with him.

In this game aimed at children, nursery rhymes are mixed up and you have to fix them.

A cop patrols the street, then goes undercover to take down "The Death Angel".

The Sarien leader seeks revenge on intrepid janitor Roger Wilco.

1986

Protect a mystical pig and prevent evil from escaping the Black Cauldron.

A slave to a wizard must escape from the wizard's house without the wizard finding out what he is up to.

A janitor must save his planet from alien invaders known as the Sariens.

1985

Travel to a faraway land to rescue the beautiful Valanice from a witch who has imprisoned her in an ivory tower.

1984

This is a simplified remake of The Dark Crystal aimed at children. Typing is not required. Actions are chosen from a list.

Sir Graham is chosen to find the three treasures of Daventry. Once he finds them, he shall become king.

Join Mickey in a space adventure in this game aimed at children. Typing is not required. Actions are chosen from a list.

Join Winnie the Pooh in this game aimed at children. Typing is not required. Actions are chosen from a list.

1983

A Gelfling named Jen must heal the Dark Crystal, which holds the power of nature, by finding a lost shard.

15 treasures were stolen by an evil troll in this children's adventure. Typing isn't required. Actions are chosen from a list.

1982

In this adventure game aimed at children, you must free 16 animals which have been captured by a dragon.

Travel through time, solve puzzles, and meet historical figures such as Benjamin Franklin, Cleopatra and Julius Caesar.

1981

Enter Cranston Manor to find the 16 treasures to break the curse of the town of Coarsegold.

The text adventure that was the basis for Leisure Suit Larry.  Find items to win the affections of various women.

In ancient Greece, Ulysses must retrieve the golden fleece, a treasure which is protected by the gods.

1980

An astronaut must travel to an asteroid, and blow it up before it collides with the Earth.

A wanderer in the kingdom of Serenia must rescue the king's daughter from an evil wizard.

1979

Locked inside an old house, search for treasure and uncover a murderer or else become the next victim.