I remember it was a gameplay trailer, or more it felt like a technological demo, showing off an engine without any HUD (ammo, health etc). I think I saw it between years 2006-2007. It was a First Person Shooter set in some sandy town which felt like Egypt, Turkey or Iraq, the place where it was happening looked like this - http://bit.ly/1btublC ... you know this kind of a building structure, I also remember that there was a little sandstorm going through that place, enemies were all over the place - on roofs, on balconies, in alleys, enemies were also wearing this on head - http://bit.ly/1d1D1xO ... person which you controlled could lean over objects, was holding and shooting from a weapon which looked like FN-FAL - http://bit.ly/1cvMngh or HK21 - http://bit.ly/1hL3YaZ ... at least I think, and in a background was playing some kind of an orchestral Arabian/Turkish felt-like music. I don't even know if that game was released or cancelled, or if it was just some kind of a technological demo, and I also don't know for what platforms it was made for. Can't remember more.