For just over a year now I've been running a game using
North Wind Publishing's Hyperborea game. It's just me, my brother and a friend of his but they each have a secondary character (from the other two players never playing more than one night). There's also a bunch of npc bouncing around.
I love the setting. Heavily based on Clark Ashton Smith's Hyperborea but with lots from his other settings and a good chunk of Howard and Lovecraft thrown in. No elves or other Tolkien things. Instead you get lost Vikings, Celts, Atlanteans, and Lovecraft aliens. There's some great pulp sci-fi blended in. There's some cultural blindspots like the name used for the Inuit culture, but we just fix that in playing. We have been using the publisher's Xambaala module as the mini setting with various dungeons transplanted to the area which is an ancient half ruined city nearly swallowed by the encroaching sands. All very conducive to plugging all sorts of stuff. I've also created a good deal of content for the area, fleshing out little leads in the official description.
Mechanically, it is like a thoughtfully streamlined AD&D which retains lots of cool options. Hits the sweet spot of simplicity and crunch for me. The coolest thing is all the classes and subclasses. Instead of multi-classing you just get new classes that fulfill those roles like fighter-mage, priest-thief, but also lots of really cool and unique things like Runegraver. I mostly like little tweaks like bumping thief fighting accuracy to be on par with clerics and wizards up to what thieves used to be. Also, fighters and their subclasses get a ton of combat actions (no meta currency needed) and even more optional actions. My group refers to it as the fighter's spell book. I think most of it was in AD&D, but its much more straightforward here.
I've never DMed before and only really played a summer long 2E game back in college. It's been pretty easy, but I get in these creative moods and make months of content over a weekend. We use roll20 as we can't always meet in person. This is clunky, but my fondness for map-making and sticking to very basic features makes it worth while.