The L4D2 survivors wake in their universe's Aperture Laboratories where they must uncover dark secrets and make a terrible choice about their future. (This campaign does not redistribute the files from the Portal games. All Portal cont...

The Portal Characters have finally made it to L4D2 my friends. Now go out and show those infected what a Mute, a Bipolor Super computer, and two free spirited robots can bring to the game!!!!

Set in the Victorian Saltwell Park (a real park in Gateshead, UK), survivors need to navigate through it and reach the safety of the rescue vehicle. The park has been used by the military as a secure evacuation centre before being overru...

Underground from Portal 2 ported/converted into a campaign and survival maps. All content is packed into a single VPK so you don't need Portal 2.

For my portal fans i give you a fat specimen that seems to go by the name Chell. Just feed her some cake and she should be fine If you wish to replace the name of Rochelle to Chell please take a look at Gunzers 6's mod that does exactl...

Original addon: https://steamcommunity.com/sharedfiles/filedetails/?id=122456481 Francis port: https://steamcommunity.com/sharedfiles/filedetails/?id=829636420

A simple concert mod for Dark Carnivals Finale featuring the cast and audio from Portal 2. WARNING: NOT FOR PEOPLE WHO HATE TECHNO/DUBSTEP MUSIC. That's what's usually in Portal 2 anyways. Yes.... I'm back from my hiatus on concert mod...

Humanoid GlaDOS enters the L4D world in search for revenge on Chell. UPDATED - See changelog for more info. Miku model © MIKUiqnw0 Remodeling & textures © Boroko Use DAP for faster downloads. 'Don't run the VPK! Place it in the 'addon...

Is that a GLaDOS model I see there? Damn Skippy it is!!! ^^ I'm rather proud of how this mod came out and by god it took quite awhile to tweak and make into a playable character. So I present you all a walking/slithering playermodel ve...

Portal's test subject #3 has come, Atlas is ready and his guns are loaded to kill infect and eat cake.

Extra and completely optional

Replaces 'Still Alive' with 'Want You Gone' from Portal 2.

an animated pc screen mod I put together for l4d2. portal 2 trailer on pc screen. it has 2168 frames of animation.

Texture made by: JayXsane (https://www.gamemaps.com/profile/79353) Texture from the ''Portal 2: LIVE!'' addon (https://www.gamemaps.com/details/3940) this addon just separates the guitar texture to be it's own thing

This mod replaces yout background menu with the ending credits of Portal 2 (Want you gone song included)

This is a vfont In order to work, needs these lines in autoexec.cfg in steam/steamapps/common/left 4 dead 2/left4dead2/cfg mat_setvideomode 1920 1080 1 mat_setvideomode 1920 1080 0 (where 1920 1080 is your playing resolution)

Replaces the sitting Witch's theme music with Portal 2's turret easter egg audio in all campaigns (with the sitting Witches only). Portal 2 & the audio is not made by me.

This is my first mod, it replace some music of Left 4 Dead 2 by music from Portal 2.

Replaces Witch music with music from Portal 2. 'PotatOS Lament' and 'You Will Be Perfect'

made this around time portal 2 was released. custom denim texture for jeans. DO NOT REDISTRIBUTE