Musashi: Samurai Legend
Back when Square Enix was Squaresoft and experimenting with all kinds of different genres, the company caught lighting in a bottle with Brave Fencer Musashi. The quirky little action game was so goofy and charming that it was immediately a cult classic. There was a follow-up on the PS2, even from the same director. But, it more or less abandoned everything that made the first game neat, and it then totally bombed as a result.