Vertical Scrolling Game Tutorial
From Shoot Em Up Kit
Method 1: Scrolling Background
In Level Settings in the Tools Menu you can set a background sprite to move vertically at a set speed as shown:
 
You can then use a fixed camera and move the player up/down/left/right on the screen
Method 2: Scrolling Scenery
This is similar to the Scrolling Background method but instead of a background sprite you add NPCs as background scenery items and set the AI to move in the –Y direction as shown:
 
Method 3: Moving player
 Place a player in the scene and rotate it to point vertically using the  Rotate tool.  
 
In the  Define menu, select  Player Definition and make a copy of Velocity +X
 
 
Scroll to the bottom of the list and open the copy.  Rename it to Velocity +Y
 
Next scroll down to Velocity and set X to 0 and Y to the required constant speed
 
Next  place NPCs and change the  AI to from Chase to Move –Y
 
Next  place scenery items
 
Next  place a camera and set it to follow the player as shown:
 
This is a simple vertical scrolling game that you can build on to make a more complex game.