Scratch

A lot of people ask how to do scrolling so here is an explanation

Scrolling is basically where the main sprite (or the one you want to move across a scrolling place) does not move and the whole terrain below him moves. Here is how you do it.

If you only want side to side you do this
Make a ground sprite and set the y position so it's on the bottom. Add this script to it.

when green flag clicked
forever start
set x to scroll x (make a variable called scroll x) + 480 * 0
forever end

to move right you do this. put it under any sprite, it does not matter.

when right key pressed
change scroll x by -(how much you want to move it).

to move left just change it to left key and do a positive movement.

now put your main character somewhere and it will move.

for scrolling up and down

Make a terrain sprite and put this script under it.

when green flag clicked
forever start
set y to scroll y(make a variable called scroll y) + 480 * 0
forever end

to move up do this. put it under any sprite, it does not matter.

when up key pressed
change scroll y by -(amount you want)

to move down you just set it to down key and change scroll y by a positive number.

set the main sprite anywhere and it will move around.

http://scratch.mit.edu/projects/MaxFlyboy/2224521

here is a link to a project that is isometric (the ground is the whole screen and has scroll x and scroll y) it has more complicated moving scripts but has the same main idea.

Hope this helps.