Intro

Open Source games are interesting from a historical point of view, because they allow the examination of a codebase and development cycle over time.

Nethack

• 
  Nethack received it's first release in 1987.
• 
  Falcon's Eye, a graphical remake of Nethack from 1999.

Battle for Wesnoth

• 
  Battle for Wesnoth in 2003
• 
  Battle for Wesnoth in 2008
• 
  Battle for Wesnoth in 2015

Neverball

• 
  Neverball in 2006
• 
  Neverball in 2014
• 
  Neverball in 2019

StepMania

• 
  StepMania neoMAX2 in 2009
• 
  StepMania 5 in 2011
• 
  StepMania running on an arcade machine around 2011

0 A.D.

Read more about 0 A.D. in it's Wikibook.

• 
  0 A.D. in 2015
• 
  0 A.D. in 2019

BZ Flag

• 
  BZFlag in 2005
• 
  BZFlag in 2010

Super TuxKart

• 
  Tuxkart 0.4.0 released in 2004
• 
  SuperTuxKart in 0.7 2010
• 
  SuperTuxKart 0.8 in 2013
• 
  SuperTuxKart 0.9 in 2015
• 
  SuperTuxKart 0.9.3 Splitscreen multiplayer in 2017
• 
  SuperTuxKart in 2018

Cube

• 
  AssaultCube in 2006
• 
  Cube 2: Sauerbraten in 2011

Minetest

In 2011 the first early release (0.2.20110731_3) of Minetest was posted to Github.^[1]

• 
  Minetest in 2012
• 
  Minetest in 2016
• 
  Minetest in 2020

Nexuiz & Xonotic

• 
  Nexuiz beta in 2004
• 
  Nexuiz in 2005
• 
  Nexuiz in 2006
• 
  Nexuiz in 2008
• 
  Xonotic in 2019

Other Open Source and Free Software Games

• 
  .kkrieger in 2004
• 
  Lincity NG in 2005
• 
  Yo Frankie! in 2008
• 
  Ferts on Fire in 2009
• 
  Warsow in 2012
• 
  Secret Maryo Chronicles in 2013
• 
  Osu! in 2019

References