Total Dreamcast was advertised in contemporary magazines in the UK and review quotes from Total Dreamcast were used by several Dreamcast games on posters and in print. But the magazine never came out. Here's a look at the story of Total Dreamcast: http://www.thedreamcastjunkyard.co.uk/2017/02/total-dreamcast-magazine-that-never-was.html The cover image here was created by Matt Neilson - it was recreated in Illustrator using bits of images found in other media and on defunct websites.
