Not this version.

Just check the mod's webpage or Moddb.com account page.

sounds like it's about damn time to upgrade if Source games are lagging for you, bro.

I personally would recommend at least trying original first. Not only it's a great game, it also offers two equally great (or even better) expansions + insane amounts of mods.

I just hate people throwing the "X is retarded " everywhere.

Except that's doing it very wrong.

I can only say to that: Wow. you suck

because he's most probably going to.

...I just realized that Kotaku DID NOT POST THE ACTUAL TRAILER, but the new video made to promote the new addon episodes made by the community ?? BIG MISTAKE ONCE AGAIN!

"Half-Life Has Never Been Scarier Than This Mod"

Because:

You'll need any Source game, so HL2, CS:S, Portal ... UNLESS some specific files of certain game is required by the mod.

...also holy hell, you CANT play MGS4 without playing the WHOLE SAGA first!

No, it was all realtime.

It's running on PC in this demo.

Oh brother brother no...

Nah, I'm pretty sure that the kid is Chico.

Seriously Hollywood...

It's BB. You can see his eyepatch's string going over his forehead.

It's a sequel to Piece Walker, so another "Big Boss prequel". So once again it takes place before MGS1, before MG1 even. You can clearly see the MSF/Outer Heaven sneaking suit The rumored era this time is the 80's, which would fit the other elements as well (like Solid Snake making appearance in SOME way)