There's a ton of stuff on YouTube of game music being arranged for other consoles, or using sound sets from other games. Some are hardware, some are done in accurate trackers, some are just throwing a midi into a different soundfont. Regardless, they can be pretty fun to listen to! Post em! Here are a few to get the thread started:
Black Belt (Master System) boss theme arranged for Capcom CP-S1 in Deflemask. Love how they filled out the arrangement and half timed the drums in some parts.
Megaman Soccer Woodfield played in Megaman X instruments. This user PrincessZelda2020 has made a ton of these, mostly remaking songs with MMX/MM7 instruments.
Final Fantasy Mystic Quest battle arranged for Mega Drive. I think this one is Deflemask as well. VGM hunting legend DANMAKUMAN put it well in the comments "Now in FM sounds more like a tune from Ys rather than Final Fantasy."