< The Players' Guide to the Cities To interact with NPCs, items, and various objects scattered throughout the game world, simply place the mouse cursor over the item in question and click. If it is possible to affect the object and you are standing close enough, this will automatically cause the appropriate effect. For example, if you click on a door that you are able to pass through, the door will open, you will step inside, and the game will load the area on the other side of the door. < The Players' Guide to the Cities