If you're going into PS1 too than
Tomba 2
lol good luck getting a copy
fortunately i have both B)Edit: A couple months ago I bought a couple random NES cartridges from this cool used video game store near me and one of them turned out to be a pretty fun/cool adventure game called
IRON SWORD!!!: WIZARDS & WARRIORS II!!and apparently it was developed by Rare (when Rare was a cool company)
so check it out and buy it from ebay or something, it's pretty cheap.