The game hard crashed for me one night while I was on the final level before Zen so I just rewatched the final act of HLVRAI and yeah this game is really good.

Even without the Zen overhaul this is such a spectacular love letter to one of the most influential and important FPS games of all time, taking everything great about the original and making it better in every way possible. The things they didn't even do better are so negligible that it'd feel like nitpicking to even bring them up.

If you couldn't play Half-Life 1, give Black Mesa a chance. The difficulty may not be to everyone's liking but it forces players to think outside the box and come up with some really fun and unique ways to approach combat. Even as someone who doesn't enjoy challenge in games, the satisfaction I got from clearing a difficult section in this game was tangible and insurmountably amazing.