Whoa. Whoa. Competitors! Kidding! I follow Athene’s “Together to the Top” mindset to come one come all! 
I don’t think they’d be averse to people doing Let’s Plays ---- for one the playthroughs even further spread the word of their mod. Second, I don’t think they’re allowed to sell anything as the Half-Life franchise is Valve’s. But I’m not one of the devs.
Devs? Your thoughts?
Better that way; more convenient for viewers.
In MY neck of the woods, Parts 1-4 are already live.
Here’s Part 1:
https://www.youtube.com/watch?v=MO00_XiAD2Q&list=PL8z5KevvdJP35tvB7-vvLMn24j4ehLF9k&index=1&feature=plpp_video
Here’s the entire playlist:
https://www.youtube.com/playlist?list=PL8z5KevvdJP35tvB7-vvLMn24j4ehLF9k&feature=plcp
(Links to the playlist and subsequent parts are also provided on the upper left and right corners of each video.)
The 19-minute, 28-second Part 5 clip is now live.
https://www.youtube.com/watch?v=g25_Oioyd0E&feature=youtu.be
I’M A DOCTOR NOT AN ACROBAAAAAAAAAAAA----falls to my death. Lawl!
Died 5x in this one. >.<
Part 6 is now up. This time it’s a 32-minute long playthrough. I just discovered Handbrake, allowing me to compress my videos to manageable sizes. Now I can upload more vids in a single day or upload one massive longplay.
I hope you like this one:
https://www.youtube.com/watch?v=D9Zy9KtEur0
(A link to the full playlist can be found on the upper left of the video; click.
)
Parts 8 and 9 of my “Let’s Play Black Mesa: Source HD” series are now live.
https://www.youtube.com/watch?v=GxKFMv4szXU
Getting chewed up because of the MP5’s microscopic reticule. 