you might want to get one of the TG-16 mini boxes. I think they are like $100 or something like that and of course Spatterhouse is on it. The TG-16 was a system that I loved but yes, you are correct, getting your hands on games unless you were prepared to catalogue order them, were really tough to find especially after the very unsuccessful launch into US markets competing with both Genesis, NES, and with Super Nintendo just around the corner. I don't think TG really even tried to enter the market again after Bonk failed to really draw a bunch of people in. Their 2 button controller was a strange choice considering how controllers were evolving at the time as well.
RE: Looking back on early Zelda vs now-Zelda