Half Life 2 Aftermath Trailer description
Half-Life 2: Aftermath is the expansion pack for HL2, last year's popular and acclaimed shooter

Half-Life 2: Aftermath is the expansion pack for HL2, last year's popular and acclaimed shooter. The expansion takes place right after the events in HL2, and you and Alyx will flee from City 17, fighting against creatures who were previous blocked from enetering the city.

The Citadel you assaulted in HL2 is tumbling into chaos, and this event will have catastrophic effects on the surrounding area, prompting your escape. Secondary characters Alyx and Dog will have a much more significant role in this follow-up.