One of many RPGs for the N64?
Let's count....
All N64 RPG's.
1.
Paper Mario Nintendo / Intelligent Systems
(Released on VC)
2.
Hybrid Heaven THQ/ H20 Entertainment
3.
Aidyn Chronicles: The First Mage THQ / H20 Entertainment
4.
Holy Magic Century /
Quest 64 Konami / Imagineer
5.
Ogre Battle 64: Person of Lordly Caliber (US Only) Nintendo/Atlus, Quest
6.
Shiren The Wanderer (JP Only) Chunsoft
7.
Wonder Project J2 (JP Only) Enix
8.
Doubutso Bancho (JP Only) Nintendo / Saru Brunei
yes.. that's many.
Imo Quest 64 is the worst of all the N64-RPG's.
Not that it's bad, I played through it.. because... I found it for 10€ and it was an RPG in a time where RPG's for Nintendo consoles were nearly non-existent.
The music is nice and it has big landscapes. Leveling up near a city inn so that you can travel far is a must.
The combination of spells is a cool feature and searching for spirit spots takes some time.
But...
1) it has random battle encounters
2) it has no epic story - "search for your father and the magic book" is all there is to it.
3) if you don't use your map and compass you'll get lost in the bland environments.
4) there are no party members.
5) you can't get money and therefore you can't buy anything.
6) if you get killed you have to load your game from the last city inn.
7) as you progress, cities are like dead. closed doors. no inhabitants.

the ending is a joke.
I don't recommend Quest 64. It's boring altogether.
But I recommend Paper Mario, Aidyn Chronicles and Hybrid Heaven.
Paper Mario is fun.
Aidyn Chronicles is big.
Hybrid Heaven is unique.