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rs_hightower_z2

One of the maps found in the January 12th TF2 dev repo leak. It has been cleaned up a fair bit, hence the "z2" addition to the map name. To load it in game, use the command "map workshop/2926113582" in your console.

The way this map works is quite interesting, and seems like a weird mix of CTF and Attack/Defence and is probably what eventually became Special Delivery.

A neutral intel spawns on the top of the tower, which both teams scramble to bring to their own shack. Once a team has captured the intel three times, they must defend the core in their shack for 2 minutes.
Should the core be broken, the race for intel begins again.
Successfully defending, unsurprisingly, means you win.

Note: This map will NOT work properly without "sv_allow_point_server_command" set to "always".
This is due to the gamemode using CTF logic and capturing three times would otherwise result in an instant win.