This video is a compilation of storyline maps from 2001 “US skyscrapers era” of Half-Life 2’s development. All maps were put in their chronological order, how they would appear in the game. You can play those maps yourself by downloading 2001 mappack from our site:
https://hl2-beta.ru/index.php?action=...

You can watch the footage of these maps with our commentaries in this video:
   • Half-Life 2 2001 Era Storyline - Play...  

Credits for the video:
Витой
XJR9000

0:41 - City 17
17:56 - Kleiner's Lab
20:29 - Canals
28:40 - Quarry Town
30:12 - Eli's Den and Antlion Caves
33:36 - Wasteland
43:25 - Air Exchange
1:00:17 - Borealis
1:08:36 - Kraken
1:11:26 - Vertigo
1:32:18 - Streetwars
1:46:28 - Citadel

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