...I ended up being addicted to a much lesser-known Japan-exclusive SNES game called Marvelous: Another Treasure Island...
Ooo! I have that game for the Super Famicom. I can't read Japanese so I've only been able to play around with it a little bit. Seems like a hidden gem though.
There are a few English translation patches for that. The one I'm currently using is published by DackR, which was released in 2016. It completely translates the game from start to finish.