I just finished playing a fan-made version of Half-Life 2: Episode Three (aka The Closure). 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. Very weirdly, it uses assets from an unfinished Star Trek: Enterprise mod, but repurposes everything. Combine fly NX-01 shuttlepods. Computer screens have ENT LCARS graphics on them. And then, when you've battled to the Borealis and gone inside a weird TARDIS-like box inside, you come to this: Pretty much an entire deck of Enterprise NX-01. 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. Here's Zombie!Kleiner Here's Doctor Breen getting executed in Doctor Phlox's sickbay. Earlier, Breen's chair was Captain Archer's command chair. Here are 2 ECS freighters, repurposed as Combine motherships, crashed in the ice. It's so strange... 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.