Yes

Do you activate Nightmare by knifing all the mannequin heads?

You also need to mount Half Life 2

The map shows errors

Which games I need to mount in my gmod?

I have CS Source, L4D2 and TF2

I think you should do another NukeTown variation like 2077 too!

when i played the map it looked like plan nuketown not the one from zombies

It's intended to give a nuclear winter / scorched look. Everything important (doorways, perks, weapons) have glows and light, or there are clear lit areas between dark areas that still allow you to find your way (example: the dark collapsed room in the upstairs of the yellow house, which has light in all 3 doorways that you can move towards as there is nothing important in that collapsed room and nothing to interact with and no obstacles in the way that would require anything more than B-lining for your desired doorway)

reduce the darkness, there are parts where nothing is visible. otherwise awesome map

ohhh okay got it! It would be cool to mess around in sandbox with the bo2 zombies nuketown but it makes sense all good! Cool map tho

It's not a map, it's an nzombies config. you have to load the config through the gamemode for the effects and entities to make it look like zombies

this looks nothing like the zombies version it just looks like mp any fix?

Most likely Half Life 2 and the Episodes, though with the 20th anniversary update you should only need Half Life 2 itself to be mounted since the Episodes should just be included with it now.

I see some errors

What game do I need to download? I already have cs:source btw

P.S.
I've added some optimization fixes and a new optional "performance mode" button for those whose machines are really struggling. Should fix the lag issue.

its also almost definitely the large amount of props scattered literally everywhere

(I believe you would have to do this after readying up, starting the game and actually spawning in every time, as well.)

And while you're at it, do "ent_fire edit_dynlight kill" as well to get rid of all the dynamic lights.

Particle effects are a hell of a drug. If you want more performance at the cost of aesthetics, just do "ent_fire nz_fire_effect kill" and "ent_fire gw_t2_ashstorm kill" into console.

this ♥♥♥♥ so laggy...