Timeline of Half-Life 2's Development

[aska1]

Hello everyone,
I was wondering if there was a conprehensive timeline of Half-Life 2's development anywhere. There is a lot of information online about HL2's development periods but some information is a bit conflicting. I understand if there is simply not enough information to go off of.

This is what I gathered from researching:
I read in Raising the Bar that 1999 - 2001 was the planning stages for the game with concepts being developed and the engine being worked 2000 - 2001. The engine was stable enough that in 2002 they started working on gameplay, but started to stray away from the original story(this is lost on me... is there any information on why they did this?) In 2003 they focused on an early version of the current story and polished the gameplay, then got to release.

Thanks for reading.

[FleshbangXD]

https://combineoverwiki.net/wiki/Half-Life_2_storyline_evolution
Not sure if this will help much but it gets most of the storyline down as to why they strayed away from the original storyline I think Valve always had unresolved gameplay and storyline issues prompting them to just rewrite the story completely

[aska1]

https://combineoverwiki.net/wiki/Half-Life_2_storyline_evolution
Not sure if this will help much but it gets most of the storyline down as to why they strayed away from the original storyline I think Valve always had unresolved gameplay and storyline issues prompting them to just rewrite the story completely

That's what I thought
The old gameplay maps aren't very fun to play. Especially the stalkers.