In this tutorial i am going to show you guys how to add Cs:s maps in l4d demo!
Needed: [b]GCFScape[/b] and the latest version of [b].NET Framework[/b]
You open GCFScape and opens C:\program files\steam\YOURNAME\steamapps there you will find counter-strike source shared. Open this and extract models, materials and maps to your Left 4 dead\ left4dead folder.
Now you have to find source models.gcf and source materials.gcf and extract these to the same folder.
Run L4D demo, Enable Developer Console in Options. Start an new chapter and type changelevel de_dust or any other default cs:s map!
Important: You cannot run custom cs:s maps here, they will turn up to be black and purple!