Let me start off by saying Happy Birthday and that I'm very happy to be able to give you a birthday present
Solstice: The Quest for the Staff of Demnos (NES)
I found out about this soundtrack and game recently but it goes pretty fucking hard with its note range and atmosphere for a NES game. I recommend only listen to the first 3 cuts on the soundtrack. This is the core of my share for you as I think it has the best chance of being new to you, and being interesting:
Age of Empires 2 (PC)
This one isn't the most unknown so you've probably heard of it, but it's one of my favorites of all time so had to put it in just in case:
