Most of the retro games I've played seem to be unheard-of here. But I'll try anyway. It's like Super Mario Bros. but good. It was a fantastic game built-in on a console, but I can't remember which. It was a cartridge console, I thought it was a SEGA one, but I might be wrong. I don't think we have it anymore, so I can't just look, if we do it'll probably be at a grandparent's house. I'll ask, but I don't think they'll have it because a wire got ruined and we couldn't find a replacement.

Alex Kidd?

He was built into Sega's Master System II

Nope. That's the only thing I seem to find on the web aswell. :p