Half-Life 2: RESEARCH AND DEVELOPMENT - Full Walkthrough

And this 40 minutes video is our argument in defense of the "Dont F!ck with the Science team" theory.

RIP CAT YOU WILL BE MISSED

This mod is difficult to play. That makes it less interesting

This mod is a lot of fun!!

ABSEN AKUU BANGGGG ☝

The cat!

wtf..? 😂

Nostalgia

Good mod

This is my favorite video))))

The puzzles in this mod were next level for sure and this is one of the mods I never got to finish back in the day due to how difficult to get through them is. Major props to the author.

Nostalgia

Mods explain everyone’s POV

😀😍😍😍

Xdddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd 😀😀😀😀😀😀😀😀😥😫🤐😨😱😰😭🤯🤯🤯🤯🤯🤯🤯🤯☠️☠️☠️☠️☠️☠️☠️☠️☠️☠️☠️☠️☠️☠️😸😸💀💀💀💀💀💀💀💀💀💀💀😺😺☠️☠️☠️☠️☠️☠️😸😸👩‍💻

Brilliant allround.

Insane puzzles!

This scratched an itch I didn't even know I had. Amazing mod.

Спасибо за работу, но одни головоломки и без оружия - это такая хуета! Такой дебилизм!

Laptops in this game using Win98

I love that this mod shows the origin of the Gravity Gun with you sending the R&D data to the resistance before the gunship attack, possibly even a recording of the fight as a demonstration of the device.

zombie torso at end

and after leaving N.E.R.D.S. he after few hours came to resistance base

Whut

Куплена

man RIP ginger the antlion

wow
combine zombie can now throw grenade

How to download This mod?

This masterpiece was made in 2009.
Amazing.

I LIKE ALL YOUR GAME HALFLIFE
AND VIDEO LOVE YOU

Om pure love

This mod my fav I watch

Bugbait

😡😡😡😡🙄🙄

you kill a cat

XXI.y Y te/ /no/

This is to test the improvization skills of anyone.

👌👌👌

this feels like home alone but with combine in a lab with antlions and zombies