Noclip said they will release their clip on 20th anniversary too. I loved the HL universe. Heres my little story:
I was living in Serbia at the time, my hometown and whoever remembers we had the NATO bombing till June 10th 1999. So I started the game, i believe it was the second level...the one with the black n white tiles and offices full off vortigaunts, very creepy atmosphere.
So im already shitting myself a bit, was 13 at the time and alone in the house. Outside the sirens started whaling, another bombing run was gonna pass by. Bombs are being dropped in the distance, the floor starts shaking, small earthquake tremors and here I am playing HL all alone in this mess and thinking WTF lol. I will never forget my first HL playthrough.
After it was the third level when the Marines show up and that electronic music with heavy guitars kicks in.... Full on pumped, soldiers saying "oh shit" when i chuck a grenade at them, while outside in real life we got F16s doing flybys and ainti aircraft missiles popping every few minutes .... Surreal experience. But that was how I first started HL1.
Half Life 2 im already in college, skipped class that day and desicated the whole day to it. Fun times, wish i could do it for a third time.