The map is open for roleplay.
Perhaps you never knew you needed Fallout: New Vegas recreated in Minecraft, but now you do. Fans managed to build the Fallout map with voxels and opened a roleplay server so you can dive into the wasteland.
As noticed by PC Gamer, Minecraft New Vegas even has weapons and many sound effects taken from the original game for better immersion. It is a roleplay-only server and can't be used for single-player wandering. The creators and players take their job very seriously: you must always be in character and communicate through voice chat. If your character dies, it's permanent, so value what you have.