Chris Green

1st-person
The Lab (2016, Windows)	Valve is
Counter-Strike: Global Offensive (2012, Windows)	Valve
Portal 2 (2011, Windows)	Personnel
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team
Portal: Still Alive (2008, Xbox 360)	Personnel
Portal (2007, Windows)	Valve Corporation
Half-Life 2: Episode Two (2007, Windows)	Valve
Dark Messiah: Might and Magic (2006, Windows)	Special Thanks (Valve Software)
Half-Life 2: Episode One (2006, Windows)	Valve
Half-Life 2 (2005, Xbox)	Valve
Half-Life: Source (2005, Windows)	Valve is
Descent (1995, DOS)	Special Thanks To
The Elder Scrolls: Arena (1994, DOS)	Additional Programming
Ultima Underworld: The Stygian Abyss (1993, PC-98)	Technical Consulting
Car and Driver (1992, DOS)	Additional Programming
Jet (1988, Amiga)	Program Design
Flight Simulator II (1986, Amiga)	By

2D scrolling
Alien Swarm (2010, Windows)	Valve

Action
The Lab (2016, Windows)	Valve is
Counter-Strike: Global Offensive (2012, Windows)	Valve
Portal 2 (2011, Windows)	Personnel
Alien Swarm (2010, Windows)	Valve
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team
Portal: Still Alive (2008, Xbox 360)	Personnel
Portal (2007, Windows)	Valve Corporation
Half-Life 2: Episode Two (2007, Windows)	Valve
Half-Life 2: Episode One (2006, Windows)	Valve
Half-Life 2 (2005, Xbox)	Valve
Half-Life: Source (2005, Windows)	Valve is
Centipede (2001, Macintosh)	Director of Research and Development
Descent (1995, DOS)	Special Thanks To

Action RPG
Dark Messiah: Might and Magic (2006, Windows)	Special Thanks (Valve Software)
The Elder Scrolls: Arena (1994, DOS)	Additional Programming
Ultima Underworld: The Stygian Abyss (1993, PC-98)	Technical Consulting

Arcade
Centipede (2001, Macintosh)	Director of Research and Development

Cards / tiles
Artifact (2018, Windows)	Valve
Magic: The Gathering Online (2002, Windows)	Magic Online Game Design

Comedy
The Lab (2016, Windows)	Valve is
Portal 2 (2011, Windows)	Personnel
Portal: Still Alive (2008, Xbox 360)	Personnel
Portal (2007, Windows)	Valve Corporation

Compilation
The Orange Box (2007, PlayStation 3)	Valve

Contemporary
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team

Diagonal-down
Alien Swarm (2010, Windows)	Valve
Centipede (2001, Macintosh)	Director of Research and Development

Direct control
Counter-Strike: Global Offensive (2012, Windows)	Valve
Portal 2 (2011, Windows)	Personnel
Alien Swarm (2010, Windows)	Valve
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team
Portal: Still Alive (2008, Xbox 360)	Personnel
Portal (2007, Windows)	Valve Corporation
Half-Life 2: Episode Two (2007, Windows)	Valve
Dark Messiah: Might and Magic (2006, Windows)	Special Thanks (Valve Software)
Half-Life 2: Episode One (2006, Windows)	Valve
Half-Life 2 (2005, Xbox)	Valve
Half-Life: Source (2005, Windows)	Valve is
Descent (1995, DOS)	Special Thanks To
The Elder Scrolls: Arena (1994, DOS)	Additional Programming
Ultima Underworld: The Stygian Abyss (1993, PC-98)	Technical Consulting
Flight Simulator II (1986, Amiga)	By

Fantasy
Artifact (2018, Windows)	Valve
The Lab (2016, Windows)	Valve is
Dark Messiah: Might and Magic (2006, Windows)	Special Thanks (Valve Software)
Magic: The Gathering Online (2002, Windows)	Magic Online Game Design
The Elder Scrolls: Arena (1994, DOS)	Additional Programming
Ultima Underworld: The Stygian Abyss (1993, PC-98)	Technical Consulting

Flight / aviation
Jet (1988, Amiga)	Program Design
Flight Simulator II (1986, Amiga)	By

Gambling elements
Counter-Strike: Global Offensive (2012, Windows)	Valve

Horror
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team

Licensed
Magic: The Gathering Online (2002, Windows)	Magic Online Game Design
Car and Driver (1992, DOS)	Additional Programming

Mini-games
The Lab (2016, Windows)	Valve is

Motion control
The Lab (2016, Windows)	Valve is

North America
The Lab (2016, Windows)	Valve is
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team

Platform
Portal 2 (2011, Windows)	Personnel
Portal: Still Alive (2008, Xbox 360)	Personnel
Portal (2007, Windows)	Valve Corporation

Point and select
Artifact (2018, Windows)	Valve

Post-apocalyptic
Half-Life 2: Episode Two (2007, Windows)	Valve
Half-Life 2: Episode One (2006, Windows)	Valve
Half-Life 2 (2005, Xbox)	Valve

Puzzle
Portal 2 (2011, Windows)	Personnel
Portal: Still Alive (2008, Xbox 360)	Personnel
Portal (2007, Windows)	Valve Corporation

Puzzle elements
Half-Life 2: Episode Two (2007, Windows)	Valve
Half-Life 2: Episode One (2006, Windows)	Valve
Half-Life 2 (2005, Xbox)	Valve

Racing / Driving
Car and Driver (1992, DOS)	Additional Programming

Regional differences
Counter-Strike: Global Offensive (2012, Windows)	Valve
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team
Portal (2007, Windows)	Valve Corporation
Half-Life 2: Episode Two (2007, Windows)	Valve
Dark Messiah: Might and Magic (2006, Windows)	Special Thanks (Valve Software)
Half-Life 2: Episode One (2006, Windows)	Valve
Half-Life 2 (2005, Xbox)	Valve

Role-playing (RPG)
Dark Messiah: Might and Magic (2006, Windows)	Special Thanks (Valve Software)
The Elder Scrolls: Arena (1994, DOS)	Additional Programming
Ultima Underworld: The Stygian Abyss (1993, PC-98)	Technical Consulting

Sandbox / open world
The Elder Scrolls: Arena (1994, DOS)	Additional Programming

Sci-fi / futuristic
The Lab (2016, Windows)	Valve is
Portal 2 (2011, Windows)	Personnel
Alien Swarm (2010, Windows)	Valve
Portal: Still Alive (2008, Xbox 360)	Personnel
Portal (2007, Windows)	Valve Corporation
Half-Life 2: Episode Two (2007, Windows)	Valve
Half-Life 2: Episode One (2006, Windows)	Valve
Half-Life 2 (2005, Xbox)	Valve
Half-Life: Source (2005, Windows)	Valve is
Descent (1995, DOS)	Special Thanks To

Shooter
Counter-Strike: Global Offensive (2012, Windows)	Valve
Alien Swarm (2010, Windows)	Valve
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team
Half-Life 2: Episode Two (2007, Windows)	Valve
Half-Life 2: Episode One (2006, Windows)	Valve
Half-Life 2 (2005, Xbox)	Valve
Half-Life: Source (2005, Windows)	Valve is
Centipede (2001, Macintosh)	Director of Research and Development
Descent (1995, DOS)	Special Thanks To

Simulation
The Lab (2016, Windows)	Valve is
Car and Driver (1992, DOS)	Additional Programming
Jet (1988, Amiga)	Program Design
Flight Simulator II (1986, Amiga)	By

Space flight
Descent (1995, DOS)	Special Thanks To

Strategy / tactics
Artifact (2018, Windows)	Valve
Magic: The Gathering Online (2002, Windows)	Magic Online Game Design

Survival
Alien Swarm (2010, Windows)	Valve
Left 4 Dead 2 (2009, Windows)	Team
Left 4 Dead (2008, Xbox 360)	Development Team

Survival horror
Alien Swarm (2010, Windows)	Valve

Tactical shooter
Counter-Strike: Global Offensive (2012, Windows)	Valve

Top-down
Artifact (2018, Windows)	Valve

Trading / collectible card
Artifact (2018, Windows)	Valve
Magic: The Gathering Online (2002, Windows)	Magic Online Game Design

Turn-based
Artifact (2018, Windows)	Valve

Vehicle simulator
Flight Simulator II (1986, Amiga)	By

Vehicular combat
Jet (1988, Amiga)	Program Design
Flight Simulator II (1986, Amiga)	By

World War I
Flight Simulator II (1986, Amiga)	By