This shirt is by Sega Mega Wear, & was produced in the early 90s, likely 91. It was bought in Brisbane Queensland. It goes the extra mile, & has an illustrated back as well. The background of the shirt is made from color shifted/faded graphics from screen shots of the game. Notice that they could only guess with the 'back art' of Sonic, because he was a 2D sprite then, so this shows him with many extra spikes. It's a very interesting view! This shirt was made in Australia. 

Owned by DJ Poppa Stanley