The “Portal” part of the equation is where the chaos begins. Using GMod’s Wiremod addon or the standalone Portal Gun mod (which replicates the Aperture Science Handheld Portal Device), players can spawn the iconic orange and blue portals onto any surface within the Strogino map.
In the context of Garry's Mod, when people refer to "Strogino," they are usually talking about a specific method of mounting Counter-Strike: Source (CSS) content to fix the infamous and ERROR signs . gmod strogino cs portal