This is "Mean Machines Magazine", a UK based magazine covering lots of consoles that were available at the time. Their 8th issue came out in May of 1991, and its cover asked the question "Sonic The Hedgehog! Best Game Ever?"
Naturally, giant fully shaded finger-waving Sonic headlines the whole cover & gives it the title "The Super Sonic Consoles Mag!"
This magazine covered the 'Sega', the Megadrive, Super Nintendo, Nintendo NES, & the Gameboy. Because Sonic 1 was released along with the Genesis (Megadrive) this issue may have actually been breaking the news on it. This is interesting to see, and the article would likely make a good read, too. This magazine would likely be a collectible item, if you could find it today.