Features

New Multiplayer Gametypes

	Brand new cooperative game, Half-Life: Decay.
	Battle your friends in split-screen deathmatch.
	All new skirmish mode – allows players to simulate deathmatch.

Enhanced Graphics

	Improved characters and environments – the most visually captivating graphics to date!
	Incredible new special effects created to leverage the power of the PS2.

Additional Features

	Terrifyingly intelligent Enemy AI that can assess threats, run in packs, and shows a distaste for suicide runs.
	New Skeletal Animation System gives monsters the most fluid and complex motion ever seen in an action game.
	Explore never-before-seen areas of Black Mesa.
	USB Mouse and Keyboard support.