Hell, even the John Madden football games could be considered RPGs since you "role-play" as American football teams
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There are a surprising amount of turn-based RPGs on the PCE HuCard format actually, I'll try to list some ones I know:
Bonzai Gaiden (actually I am sure this isn't what it's called, but it's a very ancient Japanese RPG)
Double Dungeons (first person, also an American release, though this game isn't really adventurous as it is level-based)
Lady Sword (first person)
Momo Tarou Densetsu series (aren't three of them RPGs?)
Necros no Yosai (really cool looking battles)
Order of the Griffin (another American release, but more of a strategy)
Sinbad something
Susana o Densetsu (this game has a interesting battle system)
There are more than this, but these are the ones I can think of the names for. The others I would have to look up, but a few I can describe are another first person, futuristic RPG (starts with an E, maybe?), a very old RPG made in 1988 or 1989 I think and also looks like Susano o Densetsu a bit, a cool futuristc RPG where you fly in space and then land on some planet, and one of those wacky hentai RPGs by Game Express where you fight random nude chicks
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Some of these RPGs are really cool actually, I wish they were translated, especially Necros no Yosai.