If you mean a game like a side-scroller or an eagle-eye view game, this is 100% possible.
Say you have a side-scroller game;
One easy way would be to make all of the "movable" actors move left/right with the button presses and have the player stay in the middle of the screen.
A more versatile way of doing it would be to have a variable in the world called "xScroll". Have a variable for each of your actors called "xCoordinate". Then, in the act cycle for each actor, make them do "setLocation(xCoordinate + world.xScroll, getY());". Hope that helps.
ALSO
Make sure that when you call the superclass for your world you add in a 4th parameter "false".
For example "super(800, 600, 1, false);"
This disables the "blocking" that prevents actors from leaving the screen. You would need them to leave if they scroll off.