1. NES: I actually hated Nintendo first party games with very few exceptions. They always felt basic and cheap aside from Punch Out, SMB2 and SMB3, and maybe a couple of others. I was there for Konami, Capcom, Sunsoft, etc!
3. SNES: Nintendo stepped it up big time, imo. But then so did 3rd parties. This time, Nintendo was the main event but the support was right up there making legendary hits.
3. Switch: Shocking to me as well but my 3rd party Switch games take up just as much of my playtime as first. Almost every game I want ported gets ported.
4. Nintendo Gameboy: The support was there, I guess. But it was mostly shovelware. I had about 13 games but nothing mind-blowing that I can recall.
5. You know what? Nintendo released a lot of hardware! I'll just say DS, GBA, GameCube, Wii, N64, Wiii U, Virtual Boy in that order.
