Valve

Valve is born!

Aug 24, 1996

Valve is born!<a href='' >Started</a>Valve was all started here. Valve then started to make new games.

Half Life is born

Nov 19, 1998

Half life is born This was Valve's first game they released.

Counter-Strike

Jun 19, 1999

Counter-Strike Counter-Strike is a first person shooter,

Team Fortress Classic

Aug 7, 1999

Team Fortress Classic Released This is the classic version of tf2, it is an action packed fps.

Ricochet

Nov 1, 2000

Richochet1 This is a multiplayer mod of half-life.

Half-Life Blue Shift

Jun 12, 2001

Half-Life Blue Shift This is an expansion for Valve's title "Half-Life".

Day of Defeat

May 11, 2003

Day of Defeat Day of Defeat is a WW2 game.

Counter-Strike Condition Zero

Mar 1, 2004

Condition Zero This is just a sequal to Counter-Strike.

Half-Life Source

Jun 1, 2004

HLS Half- Life source is Half-Life with updated graphics.

Counter-Strike Source Released

Aug 11, 2004

CSS

Half Life 2

Nov 16, 2004

Half Life 2 Half-Life 2 is the sequal to Half-Life.

Half-Life 2 Deathmatch

Nov 30, 2004

HL2D

Day of Defeat Source

Sep 26, 2005

DOD Day of Defeat Source is an updated version of Day of Defeat.

Half-Life 2 Lost Coast

Oct 27, 2005

HLLC This was mean't to be included in the game Halfe-Life 2 but it was not added. Valve decided to release it seperate.

Half-Life 2 Episode 1

Jun 1, 2006

Half-Life 2's first episode Half-Life 2: Episode One is a first-person shooter video game.

Portal

Oct 9, 2007

Portal Released This game is new and innovative. Go through test chambers with a portal gun and more.

Team Fortress 2

Oct 9, 2007

TF2 Released TF2 is a game that has mercanaries battling over land that two brothers are fighting over.

Half-Life 2 Episode 2

Oct 10, 2007

Half-Life 2's Second Episode Half-Life 2 Episode 2 is a sequal to Half-Life 2 Episode 1.

Portal 2

Apr 19, 2011

P2 This game is the sequal to Portal. Portal 2 has good story telling and puzzles.

Counter-Strike Global Offensive

Aug 12, 2012

CSGO released. CSGO is a new game of Counter-Strike, it has updated graphics and etc.