Concept art image - Project Vanishing Point mod for Half-Life 2

Project Vanshing Point takes place in a city that has been abandoned for the last 50 years. While different factions roam the outskirts and mountains a distress signal begins erupting from the tower at the center of the city. your mission is simple: travel through the abandoned city and figure out what is happening at the heart of the tower. We are trying to push source to it's limits to expect the requirements to be fairly high for a source based game.