Quote from Yoshi348:
Hmm, who made all those games, as well as other TG-16 games of note? Lots of articles mentioned that the list as a whole includes games from "Nintendo, Sega, and Hudson".
Hudson developed all of those, and a lot more; they're basically first-party -- Hudson co-developed the console with NEC.
Huh, the Wikipedia article on Hudson indicates they also made a lot of games for Nintendo consoles... and several official Mario games for the PC-8801.