Yes, they are. In particular, Yoshi's Island, A Link to the Past, and Super Metroid are arguably the greatest games in their respective genres (platformer, action/adventure, and Metroidvania) ever made. The only thing that makes me say "arguably" for ALttP is that the original give it a run for its money, although it probably won't be the best introduction to the series because of its difficulty. And really, there's nothing arguable about Super Metroid. If anything, it's arguably the best video game ever made, period. This isn't nostalgia talking, either, because I first played it in 2011.