Okay I’ve completely installed the game, everything works fine, except there is no .exe to run the game (and NO I’m not talking about the installer.exe)… seriosly guys, a lot of people are having this problem and I’m seeing most people just completely ignore them, or even seen some of the post deleted?
Anyways, please guys, help us out, how do we run the game? 
any help would be most appreciated
You run the game via your Steam service 
I just double-click on Black Mesa in my library, and it launches.
half baked mod and no support?
It was more than a little frantic this morning, nothing was loading even gamefront got slowed to a crawl, but the devs were very helpful in the Steam Chat, got me a mirror that worked and I am already halfway through the game.
Fantastic stuff guys!
there is no “Black Mesa” in my library after install
Thank you very much for the modification. Know you didn’t have to work so hard just for the sake of all of us strangers, so I hope I speak for everyone when I say just how grateful we are.
Try to exit the Steam and re-launch it
IDK if this is a known issue, but it seems the translations for certain strings aren’t being loaded. I see things like #BlackMesa_Chapter_1_Title instead of the name of chapter 1, etc
Reinstall black mesa after installing sdk base 2007 while steam is off
Installing Now. Fuck waiting.
Okay I have reinstalled sdk 2007 and blackmesa, and have restarted my steam, and nothing is showing… I know the game works because if I check the box to run the game after installing, the game runs and I’m able to play… but as soon as I close the game there is no way to play again… unless I reinstall the game every time I want to play :\
It’s… Incredible.
Playing Black Mesa has introduced the greatest of double-edged swords… I have the urge to play for hours on end, but I don’t want to complete this amazing mod in just one day. I want it to last at a minimum all weekend… dammit all!
I have a really weird solution, which I think might work. So goto your steam library and right-click on any game you don’t have a shortcut for on your desktop and don’t want one and just click on “Create desktop shortcut”. Now right-click on that shortcut and under the “web document” tab for the URL field, remove what is there and instead put the below line:
steam://rungameid/13540830642081628378
Save it and restart steam and then try to run that shortcut and see if it works.
Thanks!..it’s been eight long years, i’m sure it will be worth the wait
I’ve tried several different downloads and each one says that the zip folder is invalid and can’t be opened. The properties show that it’s the right amount of data in the folder but I just can’t open it. Has anyone else run into this?
Did u manually try to unzip it with 7zip or Winrar or are you using the installer?
AHA! I figured it out! So everyone kept saying to restart steam and Black Mesa would be in my library, but it never was, even restarted my PC, and tried reinstalling sdk and the game and everything else, nothing work…
HOWEVER, this time when I reinstalled the game, I left it to install to it’s default directory on C drive instead of installing it to my D drive, then I restarted steam and it was showing in my library!
So now that my game was FINALLY working, I wanted a shortcut on my desktop, I followed lucky88shp’s comment above and it worked perfectly.
Now I have a shortcut on my desktop that launches the game SO HAPPY! WOO! 
Brilliant stuff guys! Thank you so much for your dedication, can’t wait for Xen. I just stopped at Blast Pit to savor it, and so far its been awesome! Especially the fight with the mortars, it was so freaking intense ! My only complaint (besides some bugs here and there) is that Eli wasn’t better mimicked. I know it was probably the best you could do, but why didn’t you ask for more VAs? Oh well, maybe that can be one of the first fan mods incorporated into the game!
I must say the mod is bloody noice, everything about it has such a nice Half-Life-y one feel to it and you can tell the mod was definitely worth the wait and a lot of love and care was put in to every aspect.
Lovin’ it so far devs, congratulations and good work, every single last one of you!
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.