So I found a website from a Japanese Family Computer Otaku (
http://www.ne.jp/asahi/oroti/famicom/index.html), and among other sections, he has a "Rare" game section. He ranks the games on Rarity, Price, and Content (the gameplay / graphics / sound).
He uses the term "Rare" loosely, in that it doesn't just mean that physical copies of the game are scarce, but that the game is unique in some way. It also includes bad games that are just considered super rare too.
Anyway, I wasn't very concerned about actual rarity but in his gameplay recommendations. A lot of the games I haven't heard many recommendations from Western players. Many are RPGs & Adventure games, but a cursory search revealed that several have fan translation hacks.
His ranking system from best to worst is : SSS –› SS – › S+ –› S –› A+ -› A –› B+ –› B and so on down to E
I am only going to list the games ranked A or better, check his website for more info.
SSS Contra
SSS Sweet Home
SS Hitler NO FUKKATSU (aka Bionic Commando)
SS Mother
SS GEBARA (aka Guerilla War)
SS HYAKU NO SEKAI NO MONOGATARI
SS Chaos World
SS DAI 2 JI Super Robot TAISEN
S+ NEKKETSU! SUTORII TO BASUKETTO (Kunio Basketball)
S+ HEBEREKE
S+ KUNIO KUN NO JIDAIGEKI DA YO ZENIN SHUUGOU
S AKUMAJOU DRACULA (aka Castlevania)
S Zelda NO DENSETSU (aka The Legend of Zelda)
S MAHOU NO Princess Minkii Momo
S Summer Carnival '92 - Recca
A+ NAKA YOSHI TO ISSHO
A+ AIDORU HAKKENDEN
A+ DEZAEMON
A+ GIMIKKU
A+ MOERO TWIN BEE (aka Stinger but with 3-player simultaneous)
A+ Dark Lord
A+ ROKU DE NASHI Blues
A+ Final Fantasy I + II
A+ MOMO TAROU DENSETSU GAIDEN
A+ Solomon NO KAGI 2 (Solomon's Key 2)
A FUSHIGI NO UMI NO NADIA
A Metal Slader Glory
A KYOUTO-FU TEKU SATSUJIN JIKEN
A Circus Charlie
A SANSARAA NAAGA
The site has some more cool sections (one for canceled famicom games, one for famicom hardware & accessories, KUSO Games etc.)
I'm going to start loading my Ever Drive with the ones of these I've never tried or heard of.