This content is exclusive to Pixel Gun 3D. It isn't in Pixel Gun World!
Train Depot is a multiplayer map introduced in 8.0.0 update. It was added with another map called Sniper Forts. It used to have the exact same music of Sniper Forts.
A train station with idle trains and trams, and a city surrounding the station. There are billboards on the walls saying the best weapons for the level. Train tracks are deformed and arranged oddly, while tram lines are cut from the trams and are dangling like ropes. On buildings are also ladders that you can climb to get to the billboards and higher ground.
This is mostly a long ranged map, so pick off users from long range.
There could be a possibility that the city this train station is in has martial law established, and anarchy is spreading through the city. Graffiti is on the wall, the depot is trashed, and military vehicles can be seen.
The map has been removed in the 10.3.0 update as the part of the removal of "unpopular maps". However it was added back in in the 12.2.0 update, found in 3x3 Brawl.