Timeline

1987

 * InnerMission is released as the first release of a new company called Pie in the Sky Software.

1988

 * TBD

1989

 * Stokes considers this the year Pie in the Sky Software was founded as a proper business.

1990

 * TBD

1991

 * The final version of InnerMission is released.

1992

 * May 5: Wolfenstien 3D is released by id Software, popularizing the modern first-person shooter.
 * Observing the functioning of the engine inspires Kevin Stokes to begin work on a new project in C that becomes the Power 3D engine.
 * Corncob 3D is released as shareware.

1993

 * Stop Nick Macki is created as a beta draft for Pie in the Sky's in-development first-person shooter. Timelocked not to run after July 15th.
 * Lethal Tender is released, premièring Power 3D.
 * Pie in the Sky Software begins work on a German FPS.

1994

 * Terminal Terror is released.
 * Pie in the Sky Software begins work on the 3D Game Creation System (GCS).
 * Corncob Deluxe is released as the retail version of Corncob 3D by MVP Software.

1995

 * Version 1.x of the GCS is released.

1996

 * November Return of the Dämons is featured in an issue of the German gaming magazine PC Action.

1997

 * TBD

1998

 * Version 2.x of the GCS is released for Microsoft Windows.
 * August: first news post is uploaded to the GCS Games website.

1999

 * TBD

2000

 * TBD

2001

 * Version 3.x of the GCS is released, demoed by the game Max Resistance.

2002

 * June 2002: Kevin Stokes takes up a job as a programmer at Imaginant as his company declines.

2003

 * May: Pie in the Sky Software is disbanded and the GCS is commercially discontinued.
 * August 30: last news post on the GCS Games website.

2004

 * TBD

2005

 * TBD

2006

 * The 3D Game Creation System, alongside GameMaker: Studio, Construct, The Games Factory and FPS Creator, was used in the "CS 110: Problem Solving through Game Creation" course put out by the College of Engineering and Applied Science.

2007

 * TBD

2008

 * October 28: the website GCS Archive is founded by Lonnie "Saturdaynight" King.
 * The site is principally created for his DOS GCS Demonstration Project, later renamed to MOD-G.

2009

 * August 18: sprite resources from the 3D Game Creation System are posted onto the ZDoom forums.

2010

 * March 5: the Wikipedia article for Pie in the Sky is started by Graham L. Wilson.
 * March 13: Pie in the Sky Software is briefly revived as a developer for the Android platform.
 * March 15: Pie in the Sky releases its Physics Demo for Android.
 * May 23: Pie in the Sky releases its Dice App.

2011

 * TBD

2012

 * December 21: Lazy Game Reviews releases a video about Terror in Christmas Town.

2013

 * February 28: the first beta of the MOD-G project is released by Lonnie "Saturdaynight" King.
 * March 20: an archived version of the old GCS Games website is uploaded by leileilo.

2014

 * October 9: Lazy Game Reviews releases a video about Corncob 3D.
 * December 4: Lazy Game Reviews releases a video about Prezzie Hunt.

2015

 * January 8: Quarantineism last updates his playlist of 3D Game Creation System game videos.
 * December 24: the GCS game Terror in Christmas Town was played by the Game Grumps.

2016

 * October 13: the YouTube channel Hall of First Person Games is launched; going on to feature several Power 3D titles.

2017

 * March 30: the Pie in the Sky Wiki is launched by Graham L. Wilson.
 * October 11: the Power 3D engine is mentioned in the article "The Complete History of First Person Shooters" by K. Thor Jensen published by Geek.com.

2018

 * February 28: Kevin Stokes gave Graham L. Wilson a notice of explicit permission to reuse Pie in the Sky Software related media.