i have a cheat that says alien mode but i cant figure out what it dos can someone help me?

Dosent anyone know this?

you become a Vortigaunt, simple as

how do you know that? can you look on 3d person ore something because i didn't see any difference

Because you have Vortigaunt arms on screen.....

holly shit thats cool

But it only works when you star a new game.

yeah, you need to complete the game...and therefore unlock the alien mode in the cheat section (I think it probably works just doing the cheat for it) and then start a new game...its quite cool.

I saw my old post on this thread and thought I'd state again and add something.
To get alien mode, you either must complete Half-Life (this PS2 version) and it becomes unlocked in the cheat section, or you can enter a cheat to get the alien mode.

If you wish to cheat and play as the vortigaunt alien right now, here is the cheat code which must be entered on the cheat screen:

Press Up, Triangle, Up, Triangle, Up, Triangle, Up, Triangle

After entering the cheat, you must enable it and then start a new game.

And, if you play Half Life: Decay, and you complete each level with an A from either Gina or Colette then you unlock a 10th level where you play as a vortigaunt alien.

Enjoy