nerdboy64's gun mod
No it is a custom built map
You can make a custom map on minecraft with out a map editor by building or demolishing certain land features or you can use a seed by typing your seed in the bottom box on the "create new world" menu.
escuse me but what?
You have to create a server and load the map to the server.
Of course you can. Minecraft has a folder with worlds in it in Application Support, so just put the map in.
It depends on the map.
SkyBlock is a great map.
-579322790607890076 is the seed and the map is custom
There are most likely many. One of them is the lost custom map.
Yes, it is only a custom map. All custom maps are free, and you should never have to pay to play one.
Put the new map in the minecraft_server folder then open the server.properties file and add the name or number of the map next to level-name=.
The texure pack that is used is for the tourist adventure map, go to google and type "minecraft tourist adventure map" to get your real answer