Half Life 2: Episode Three Announcement Trailer

Half Life 2: Episode Three Announcement Trailer is an immediate screamer video created by Valve (A fake account made by CloudTheHandsome)

The video itself pretends to be an announcement trailer for the canceled video game Half-Life 2: Episode Three, Once opened, an image of Vortiquant (Happ Vort) appears with a repeated loud scream that was used in Winterrowd games, In addition to the screamer itself, The Vortigaunt face was used in this Reddit post.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=yR6R-FeoCao