From Black Mesa: Wiki

Overview

There have been many Community Projects[1] to increase the contact between the Black Mesa project and the community itself.

Fan Made Trailers

There are many fan made trailers for Black Mesa, most of which have sprung from the Black Mesa Community Project:" Make A Black Mesa Fan Made Video" [2].

Fan Made Wallpapers

You can see the wallpapers that won the official Community Project at the bottom of this page: [3].

Fan Made DVD Box Art

The community has made many DVD sleeves [4].