Map Labs: Think Tank - Water is Cold
Part of "Map Labs #4: Think Tank." Features puzzles centered around machinery and illusions in a black and white minimalist map.
You can get Map Labs: Think Tank as a map pack here: https://www.runthinkshootlive.com/pos...
It's highly recommended to have Half-Life 2 or Half-Life 2: Episode Two installed when trying out this map pack.