Tom Leonard

Game Credits


Portal 2 (2011)   (Personnel)
Half-Life 2 (2004)  


Thief II: The Metal Age (2000)   (Engine Programmers)
System Shock 2 (1999)   (AI Programming)
Thief: The Dark Project (1998)   (Lead Programmer)
Flight Unlimited II (1997)   (Additional Programming Support)


British Open Championship Golf (1997)   (Technology)


The Unmaking (2014)   (Thanks)
Dark Messiah: Might and Magic (2006)   (Special Thanks)


Counter-Strike: Global Offensive (2012)   (Valve)
Alien Swarm (2010)   (Valve)
Left 4 Dead 2 (2009)   (Team)
Left 4 Dead (2008)   (Development Team)
Portal: Still Alive (2008)   (Personnel)
Half-Life 2: Episode Two (2007)   (Valve)
The Orange Box (2007)   (Credits)
Portal (2007)  
Half-Life 2: Episode One (2006)   (Valve)
Half-Life: Source (2005)   (Valve is)
Counter-Strike: Source (2004)   (Valve)
Half-Life 2 (2004)   (Valve)

Developer Biography

Tom Leonard now works for Valve as a Software Engineer.

Immediately prior to joining Valve, Tom was the CTO of Buzzpad, Inc. Before that, he spent five years at Looking Glass Studios, where he was notably the lead programmer of Thief: The Dark Project, writing the AI and core architecture for the game. Tom also had spent seven years working on C++ development tools at Zortech and Symantech.

Last updated: Jul 16, 2003