Developer BIO

There is no biography on file for this developer.

Also Known As

• Mark Siebert

Websites

• 1999 Interview -- on Adventure Classic Gaming
• Mark Seibert -- his listing on the iMDb
• Mark Seibert's Website -- Personal Homepage

Games Credited

• Command & Conquer 3: Kane's Wrath (2008), Electronic Arts, Inc.
• Quest for Glory II: Trial by Fire (2008), Tierra Entertainment
• A Force More Powerful: The Game of Nonviolent Strategy (2006), International Center on Nonviolent Conflict, York Zimmerman Inc.
• King's Quest Collection (2006), Sierra Entertainment, Inc.
• The Lord of the Rings: The Battle for Middle-Earth II - The Rise of the Witch-King (2006), Electronic Arts, Inc.
• Arcanum: Of Steamworks & Magick Obscura (2001), Sierra On-Line, Inc.
• Throne of Darkness (2001), Sierra On-Line, Inc.
• SWAT 3: Close Quarters Battle: Elite Edition (2000), Sierra On-Line, Inc.
• SWAT 3: Close Quarters Battle (1999), Sierra On-Line, Inc.
• King's Quest: Mask of Eternity (1998), Sierra On-Line, Inc.
• Leisure Suit Larry's Casino (1998), Sierra On-Line, Inc.
• King's Quest: Collection Series (1997), Sierra On-Line, Inc.
• Shivers Two: Harvest of Souls (1997), Sierra On-Line, Inc.
• Leisure Suit Larry: Love for Sail! (1996), Sierra On-Line, Inc.
• Mixed-Up Mother Goose Deluxe (1995), Sierra On-Line, Inc.
• Roberta Williams' Phantasmagoria (1995), Sierra On-Line, Inc.
• Torin's Passage (1995), Sierra On-Line, Inc.
• King's Quest (Collector's Edition) (1994), Sierra On-Line, Inc.
• Outpost (1994), Sierra On-Line, Inc.
• Roberta Williams' King's Quest VII: The Princeless Bride (1994), Sierra On-Line, Inc.
• Crazy Nick's Software Picks: King Graham's Board Game Challenge (1993), Sierra On-Line, Inc.
• Gabriel Knight: Sins of the Fathers (1993), Sierra On-Line, Inc.
• Pepper's Adventures in Time (1993), Sierra On-Line, Inc.
• Slater & Charlie Go Camping (1993), Sierra On-Line, Inc.
• Take a Break! Pinball (1993), Sierra On-Line, Inc.
• The Dagger of Amon Ra (1992), Sierra On-Line, Inc.
• Jones in the Fast Lane: CD-ROM (1992), Sierra On-Line, Inc.
• King's Quest VI: Heir Today, Gone Tomorrow (1992), Sierra On-Line, Inc.
• Police Quest: In Pursuit of the Death Angel (1992), Sierra On-Line, Inc.
• Quest for Glory III: Wages of War (1992), Sierra On-Line, Inc.
• Quest for Glory I: So You Want To Be A Hero (1992), Sierra On-Line, Inc.
• Castle of Dr. Brain (1991), Sierra On-Line, Inc.
• Conquests of the Longbow: The Legend of Robin Hood (1991), Sierra On-Line, Inc.
• EcoQuest: The Search for Cetus (1991), Sierra On-Line, Inc.
• Hoyle Official Book of Games: Volume 3 (1991), Sierra On-Line, Inc.
• Leisure Suit Larry 1: In the Land of the Lounge Lizards (1991), Sierra On-Line, Inc.
• Leisure Suit Larry 5: Passionate Patti Does a Little Undercover Work (1991), Sierra On-Line, Inc.
• Mixed Up Fairy Tales (1991), Sierra On-Line, Inc.
• Police Quest 3: The Kindred (1991), Sierra On-Line, Inc.
• Roberta Williams' Mixed-Up Mother Goose (1991), Sierra On-Line, Inc.
• Space Quest I: Roger Wilco in the Sarien Encounter (1991), Sierra On-Line, Inc.
• Space Quest IV: Roger Wilco and the Time Rippers (1991), Sierra On-Line, Inc.
• Conquests of Camelot: The Search for the Grail (1990), Sierra On-Line, Inc.
• King's Quest V: Absence Makes the Heart Go Yonder! (1990), Sierra On-Line, Inc.
• Oil's Well (1990), Sierra On-Line, Inc.
• Quest for Glory II: Trial by Fire (1990), Sierra On-Line, Inc.
• Code-Name: Iceman (1989), Sierra On-Line, Inc.
• Hero's Quest: So You Want To Be A Hero (1989), Sierra On-Line, Inc.
• Leisure Suit Larry III: Passionate Patti in Pursuit of the Pulsating Pectorals (1989), Sierra On-Line, Inc.
• Silpheed (1989), Sierra On-Line, Inc.
• Space Quest III: The Pirates of Pestulon (1989), Sierra On-Line, Inc.
• Police Quest 2: The Vengeance (1988), Sierra On-Line, Inc.