Since drx liked the bit about Ecco originally being called "Dolphin" here is another scan, but this is dated 1992.

http://i483.photobucket.com/albums/rr196/MathUser/s2_MegaPlay_Issue11_August1992_Page.jpg

I also found this Super Mario Kart scan. I dont recognize the level design at all.

http://i483.photobucket.com/albums/rr196/MathUser/s1_ComputerPlusVideoGiochi_Issue20_.jpg