Some nice Dreamcast specific details in this months Kickstarter update! And more, of course
As you may know, Intrepid Izzy's graphics are made in high resolution and then automatically scaled to a lower resolution when generating the Dreamcast version. Some optimisations have been made to improve colour palette generation and selective dithering to reduce banding.
This sound a bit technical, but you can clearly see the difference in the examples below. Especially when you see the zoomed in picture.