Lots of great contenders, but I'm going to have to give it to Super Mario 64, though A Link to the Past, Super Metroid, Final Fantasy IV, and Super Mario World would not be too far behind.
For games released in NA during the 90s, I'd give the vote to Super Mario Bros. 3.
All told, of my Top 10 games of all time, seven of them were released in NA in the 90s. Such a great decade overall.
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