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Half-Life

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GF Rating
7.5

627 ratings

Cheats, Codes & FAQs

Invisibility

At the cheat screen, enter code

  • Left, Square, Right, Circle, Left, Square, Right, Circle
    Invisibility
Alien mode

At the cheat screen, enter code

  • Up, Triangle, Up, Triangle, Up, Triangle, Up, Triangle
    Alien mode
Xen gravity

At the cheat screen, enter code

  • Up, Triangle, Down, X, Up, Triangle, Down, X
    Xen gravity
Bonus levels

At the cheat screen, enter code

  • Triangle, Square, Left, Right, Circle, X, Up, Down
    Bonus levels
Invincibility

At the cheat screen, enter code

  • Left, Square, Up, Triangle, Right, Circle, Down, X
    Invincibility
Unlimited ammunition

At the cheat screen, enter code

  • Down, X, Left, Circle, Down, X, Left, Circle
    Unlimited ammunition
Slow motion mode

At the cheat screen, enter code

  • Right, Square, Up, Triangle, Right, Square, Up, Triangle
    Slow motion mode