Half-Life 2

Developer: Valve Corporation

Publisher: Valve Corporation

Release Date (US): November 16, 2004

Save Locations
Steam Install Folder\SteamApps\Steam Username\Half-Life 2\HL2\Save\

or:

Steam Install Folder\SteamApps\common\Half-Life 2\hl2\save\

Mac OS: (user-specific steam data)

~/Library/Application Support/Steam/SteamApps/Steam Username/half-life 2/hl2/save/