If you wanna do it yourselves, here's how:
1.-At the title screen, press: Down, Down, Down, Left, Right, A
2.-Enter these numbers at the sound test:FM no.46, PCM no. 12, DA no. 25 then press start. A Japanese message and a creepy Sonic should appear.
1.-At the title screen, press: Down, Down, Down, Left, Right, A
2.-Enter these numbers at the sound test:FM no.46, PCM no. 12, DA no. 25 then press start. A Japanese message and a creepy Sonic should appear.
たのしさ∞
せが・インタープライズ
- まぢん画
"Infinite fun
Sega Enterprise
- Madin's drawing"
It doesn't say demon. "Majin" (まじん) means demon which is very close, but apparently "Madin" was the nickname for one of the object designers in this game. So, "まぢん" = "Madin", "画" = drawing. Madin's drawing.