Half-Life Codes -

Note: This game was never released commercially and is only available as a beta version.

Cheat mode:
Choose three words and form the indicated phrase to activate the corresponding cheat function.

Effect	Code
Xen gravity on earth	Xen teaches Black Mesa
No target mode (nothing attacks you)	Soldiers ignore Gordon
God mode	Otis loves Dreamcast
Unlimited ammunition	Dreamcast gives firepower
All guns available	Gordon Ignore Explosives
View ending sequence	Answers Begat Questions
Slow motion mode	Action ignore silence