Cheat Mode First open Steam, go to your
"Play Games" menu, and select Half-Life 2: Episode One. Then
rRight click on it and select "Properties". Then click the
"Launch Options" button and type
-console. Now click "Ok", then
close it. Double click "Half-Life 2: Episode One" to start your
game. When it is loaded and you are playing, press
~ to show the
console window. Then, type
sv_cheats 1 press
[Enter] to
enable the cheat mode. You can now type in the codes below at
the console window. The code scan be used as a command line
parameter by placing the "-" character before them.
Note: For the
games that are downloaded from Steam and to use the cheats in
single player mode, start a game with the
-applaunch-dev -tconsole
command line parameter.