Half Life 2 is one of the few first person shooter games that has aged well. In a sense, I don't know if it need spit and polish. But spit and polish is what it has received as artist Logithx released these gorgeous renditions of Half Life 2's City 17, as rendered in Unreal Engine 3.
Logithx released three screenshots of his work on the polycount forums and has stated that everything in this work has been built from the ground up. No assets from the original game have been used, except for the face of Dr Breen.
Why not use Unreal Engine 4? Well that was only recently made available to developers. Now that it is available, Logithx is working on a port.
"I'm working every day to port this to the new Unreal Engine 4 but as I mentioned in my original post there's lots of work that was unfinished," he said, "not to mention that I have to redo all the materials and many textures because of the awesome physically-based shading in Unreal Engine 4."
Head to Logithx's original post for more info on this gorgeous looking project.