I don't know if there's been much talk of this here, so I thought I'd post this
They made a remake of the game and recently released it. Interesting note, the original version of Monster World IV is included. Though if you want it physical, the Switch version has it on the cartridge. The PS4 version just gives you a download code. If you're a trophy guy though, both the original and the remake on PS4 have trophy lists, both with platinums.
https://wonderboy.inin.games/
Here's the trailer:
https://www.youtube.com/watch?v=CbKxowWY5IE