It was in development in 2013 and aimed at adding a procedural element to Half-Life.
The players would have gone through a procedurally generated building as they seek to save hostages.
While going around trying to save people, they will be engaging in random encounters with enemies.
The main idea was to add the replay-ability to Half-Life, which would be surrounded by more traditional story elements to fill in the spaces.They didn’t go through with it thoughValve decided not to go ahead with that version of the third game, but not because this isn’t what the first two were like.
Thus, this idea was scrapped from Half-Life 3 and birthed the idea for Left 4 Dead 3.There were other such ideas as wellThe makers had plans to make different iterations at different times, including being inspired by various franchises and one point, even from Dark Souls.
As 2014 arrived, improvement of Source 2 shelved all the practical ideas of Valve, like L4D 3, Half-Life three, and the RPG concept.Half-life fans had to wait for way longerThen, after five long years, Half-Life returned with Half-Life: Alyx.