I was going to go with Super Metroid but it's revered. For underated stuff, i'd go with GTA Vice City with it's amazing 80s soundtrack. It completely immerses you in the decade.
I think the soundtrack played way more of a role in that game than a lot of things to give it the vibe it did.
That goes for every GTA game too because it seems like with GTA V they immersed you in West Coast current hip hop like Kendrick and Snoop and the classics of pac which is what the hip hop stations play in cali, it's so realistic to make you feel the game's vibe, both III and IV gave you that new york back street boom bap style of hip hop like Jay Z and Jadakiss. It's often overlooked with GTA as a franchise but in a arsonal of perfect things going for the franchise. Sound track is always good for them.
Might be relevancy biased but I been no lifing far cry 5 that just came out and it's soundtrack is incredible. From the country songs that get you in the scene of montana, the orchestral relgiious choir music that gives you the main plot of the game and hidden gems like Marvin Gaye. it's been really awesome hearing the great tunes.
