like you're watching Independence Day and suddenly Will Smith is running around on the Enterprise except it's the Enterprise sets standing in for Area 51. Here are 2 ECS freighters, repurposed as Combine motherships, crashed in the ice. Earlier, Breen's chair was Captain Archer's command chair. Here's Doctor Breen getting executed in Doctor Phlox's sickbay. Four-year-old images from Valve's apparently abandoned episodic first-person shooter series surface, depict apparent return to Xen. Only it's not supposed to be the Enterprise, it's presented as a generic futuristic base in which you battle Combine, headcrabs and zombies. Half-Life 2: Episode 3 concept art surfaces. Pretty much an entire deck of Enterprise NX-01. And then, when you've battled to the Borealis and gone inside a weird TARDIS-like box inside, you come to this: Computer screens have ENT LCARS graphics on them. Very weirdly, it uses assets from an unfinished Star Trek: Enterprise mod, but repurposes everything. Even though it ignores lots of Half-Life lore and treats Alyx horribly (she spends most of the adventure crying in a mansion, and then dies a redshirt death), it's a lot of fun. I just finished playing a fan-made version of Half-Life 2: Episode Three (aka The Closure).