gm_ps_hugeflatconstruct_v2
This is part of PHX2, which was later integrated into Garry’s Mod, without this map. I had it on an old hdd, so there it is.
I take no credits for this upload.
This is the original gm_ps_hugeflatconstruct_v2, unedited, with the GladOS voice line when you start the map.
For people that don’t know what this map is, basically a mix of gm_construct and gm_flatgrass but extended, it’s "huge", there is plenty of terrain to build on and possibly easter eggs.
People with potato computers, you may encounter lower FPS on this map.
(Edit: After uninstalling some addons and uninstalling the other upload of the map (I think that I was playing on the other one when trying performance tests), my fps seems to be at 500-600 constantly on the map)
If the brightness is too much for you, enable Bloom in your spawnmenu, it fixed it for me.
If you want a nav mesh to do stuff with NPCs and all:
https://steamcommunity.com/sharedfiles/filedetails/?id=2618215381
Hope that you will enjoy!