While we wait for the release of Half-Life 3, a fan-made sequel to Half-Life: Opposing Force lets us delve back into the universe and continue that storyline.
In Prospekt, you pick up the story of US Marine Adrian Shephard after he was teleported into the Nova Prospekt prison by the Vortigaunt to help fight the Combine. The mod was recently given the seal of approval from Valve and the developer estimates that it's about as long as Half-Life 2: Episode One.
The trailer sets the foundation for Prospekt's story, gives you a tour of the game's environments, and shows you some of the enemies you'll face off against. We've missed that distinctive sound of the shotgun!
Prospekt is now available from Steam and costs $9.99.