Hi there, 

I am new to this forum and wanted to say hi first of all. 

Secondly, I am in the process of creating a vertical 2d shooter using the assets I am creating on photoshop and illustrator. I want to put a scrolling parallax in the background to give the illusion that the player is moving forward (similar to Skyforce Anniversary) but I am not sure how best to create the graphics in terms of the document size etc. I have used a scrolling parallax before using a 3D game object in unity and wrapping a background to it. This works fine for a repeating background but I would like mine to change throughout the level. 

Has anyone got any experience with doing something like this?

Thanks in advance 

Xe

I would do multiple background layers at varying speeds with trigger points within the level to dissolve different images in and out at certain points in the level. I would draw them all the same width as the room.  They don't all need to be complete pictures, some can be just details that end up wrapping back around at different spots to give the illusion it's a different graphic.

Thanks so much for this! Really helpful