If you’ve been dying to get more mileage out of your copy of Half-Life 2, well Valve is going to help you out in the near future with an upcoming expansion pack entitled “Half-Life 2: Aftermath”. The story picks up right after the abrupt ending of Half-Life 2, with Gordon and Alyx fighting creatures who have overrun City 17. This is not to be confused with Valve’s other add-on to Half-Life 2, “Lost Coast”, which will feature a new level to showcase the technological breakthrough of high-dynamic-range lighting. Both of these expansions are expected to be available through Steam this fall. Gamespot has just released a short trailer for Half-Life 2: Aftermath, click below to have a look-see.