A single player mod with 10 large SP maps that will give you about 10 hours of gameplay.
This mod is a joyful celebration of Source mapping and everything that I love about it and its community. It is funny, random, full of action, and even has some unique surprises in it. It took me some places that I had never seen mapped before with HL2 assets, plus it made references to Leon's old mods which invoked nostalgia. His mapping is crazy. Sure, the puzzles may be easy, there are a couple bugs (that could be avoided) and the path that the player takes is kind of unusual and sometimes hard to figure out while other times really obvious, but I didn't care about that.
At the end they said that months of work had to be removed with the new version. Really? Because this alone was outstanding. I had a tremendous fun with this and wish I could have similar experiences more often. Great job, Leon. Keep being awesome.