no it isn't. gmod doesn't take place before 9/11. it doesn't take place anywhere. do you expect combine mechs, space rockets, advanced mecha uniforms and futuristic nuclear explosion guns can possibly take place in 1993? it really doesn't matter when it takes place, because it takes place at whatever time you want.

I think 9/11 pasted after GMod was released, So it's not real, 9/11 happened in 9/11/1, GMod was released in 2004, So it's not a real place. I know the twin towers are there, BUT HOW CAN FUTURISTIC, HAZARDOUS ADVANCED FORMS OF HAZMAT SUITS, COMBINE MECHS AND STUFF, ROCKETS, AND NUKES COULD TAKE PLACE IN 1993?!, Also This is my OWN form of AVP's. But, Afterall, This does not matter after this event or before. It's the truth that, Because this takes place at whenever time / any where you want it to be. Hope this is hepful.
Peace out.

no 2005 atually

the year that half life 2 did

引用自 wojtazet104：

the year that half life 2 did

probably

i checked it's in 2023

The Combine invasion a.k.a the portal storms or the morning of half life 1 took place in december of 2001 in new mexico. So after 9/11

But since gmod or gm_Bigcity isn't cannon to the half life universe, This map is just a regular american 90's/200's styled city map

引用自 Bean_L00rd：

The Combine invasion a.k.a the portal storms or the morning of half life 1 took place in december of 2001 in new mexico. So after 9/11

wait nvm its may during 2001

So we can conclude, 9/11 never happened
in the half life universe

引用自 Bean_L00rd：

So we can conclude, 9/11 never happened
in the half life universe

I bet the WTC was converted into a citadel aswell

bigcity takes place before 9/11 as you can see the twin towers still standing

i am going to commit plane

gmod was made in 2006 so not in the year of 9/11