The writer of Tomb Raider and Mirror’s Edge is Rhianna Pratchett, Terry Pratchett’s daughter. She also contribute to Bioshock Infinite
Pratchett was born in Rowberrow, Somerset.
After obtaining a journalism degree, Pratchett worked for the magazine Minx.
Her father, Terry Pratchett, is a best-selling fantasy and children’s fiction author, famous for his Discworld series of novels. On 14 November 2012, Terry Pratchett announced in an interview that he will leave the intellectual rights for the Discworld series to his daughter who may continue writing for it if she chooses.
Pratchett specialises in developing the story, humour and characterisation in games. She wrote regularly for the (now defunct) PC games magazine PC Zone and The Guardian newspaper. In September 2006, the video game magazine Edge placed her among the ‘Game Industry’s 100 Most Influential Women’
Pratchett has contributed to the following games:
Mirror’s Edge by EA DICE
Dungeon Hero by Firefly Studios
Overlord by Triumph Studios
Overlord: Dark Legend by Climax Group
Overlord: Minions by Climax Group
Stronghold Legends by Firefly Studios
Beyond Divinity by Larian Studios
Overlord II by Triumph Studios
Heavenly Sword by Ninja Theory
Prince of Persia by Ubisoft Montreal (additional dialogue, main writer Andrew S. Walsh)
Risen by Piranha Bytes (English localization)
Viking: Battle for Asgard by The Creative Assembly 
Tomb Raider by Crystal Dynamics
BioShock Infinite by Irrational Games (additional writing, main writers Ken Levine and Joe Fielder)
Pratchett will co-write The Watch, a television series based on Terry Pratchett’s Discworld novels.
Pratchett has written a fantasy novella titled Child of Chaos, distributed with the computer role-playing game Beyond Divinity. She has written scripts and storyline for several games, including Heavenly Sword and Overlord. She was nominated twice for the Writer’s Guild of Great Britain’s 2008 Awards for Best Video Game Script, for Heavenly Sword (together with co-writers Tameem Antoniades and Andy Serkis) and Overlord. She also wrote a six-issue comic book miniseries (published by DC Comics) based on Mirror’s Edge. The first feature film written by her, Vigilia (a working title) was due to shoot in 2011 and to be produced by Paul Atherton.