1-3 are boring, designed poorly, and kind of a nightmare to play these days. that goes for a lot of NES games, but RPGs in particular.
I've played 12 Int briefly. It seemed interesting but not enough to justify playing through 12 again! 13-2 based on the demo is not my cup of tea. If I hadn't played Persona 3 and 4 I'd probably think I'm not into RPGs anymore.
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http://www.youtube.com/watch?v=npHDxSvwCE0