Fantastica Voyage: Initial Environment Concept
Here's an example as to how I could go about creating my environment. To make it more authentic to a side scroller game, I have included a "ceiling and floor" which I have brought into the foreground, and then I pushed the background behind by using slightly lighter colours. In a way, this emphasises the effect of a tunnel, which I wanted to convey here in particular to display how I thought the bloodstream could look. The little critter on screen is an example design for the sporozoite organism.