WCodename: ICEMAN is a graphical adventure game made with the SCI engine and published by the American computer game company Sierra On-Line in 1989. The lead designer was Jim Walls, who also created several Police Quest games. Mention of a "Codename: PHOENIX" in Sierra promotional material suggests that ICEMAN was meant to be the first part of a Codename series, but disappointing sales ended the would-be franchise after one game.
WConquests of Camelot: The Search for the Grail is a graphic adventure game released in 1990 by Sierra On-Line. It was the first game in the Conquests series designed by Christy Marx and her husband Peter Ledger. The only other game in the series was 1991's Conquests of the Longbow: The Legend of Robin Hood. Marx did the majority of the design work while Ledger created the game and package art.
WConquests of the Longbow: The Legend of Robin Hood is a graphic adventure game designed by Christy Marx and published by Sierra On-Line in 1991. It is the second and final part of the Conquests series, which begins with Conquests of Camelot: The Search for the Grail. It features VGA graphics and Sierra's standard icon-driven interface first seen in King's Quest V.
WKing's Quest V: Absence Makes the Heart Go Yonder! is a 1990 graphic adventure game by Sierra On-Line. Originally released in November 1990, it featured a significant improvement in graphics. It was also the first King's Quest installment to replace the typing user interface with a point-and-click user interface. The title is a spoof on the proverb "Absence makes the heart grow fonder".
WPhantasmagoria is a point-and-click adventure horror video game designed by Roberta Williams for MS-DOS and Microsoft Windows and released by Sierra On-Line on August 24, 1995. It tells the story of Adrienne Delaney, a writer who moves into a remote mansion and finds herself terrorized by supernatural forces. It was made at the peak of popularity for interactive movie games and features live-action actors and footage, both during cinematic scenes and within the three-dimensionally rendered environments of the game itself. It was noted for its violence and sexual content.
WPolice Quest II: The Vengeance is an adventure game produced by Jim Walls for Sierra On-Line, and released in 1988. It is the sequel to Police Quest: In Pursuit of the Death Angel and is part of the Police Quest series.
WQuest for Glory: So You Want to Be a Hero is a 1989 adventure game/role-playing game hybrid, designed by Lori Ann Cole and published by Sierra On-Line for MS-DOS. It is the first game in the Quest for Glory series, and has been credited for being a genre-defining game, as it tried to mix graphical adventure gaming with role-playing-like elements such as statistic building that would actually affect the ability to accomplish certain parts of the game. The game has a satirical and silly tone. Ports for the Amiga, Atari ST, and NEC PC-9801 were released in the early 1990s. A VGA remake, titled Quest for Glory I: So You Want To Be A Hero, was released in 1992 for DOS and later in 1994 for Mac OS.