QUACK ATTACK 1985: TURBO DX EDITION ATTACK MOUNTAIN, 2016
I had a random conversation with someone one day and spent three days mutating it in my brain until this came out. It's hard to over-talk it so I'm going to not even try to explain. Just know it's a rad arcade game and you should totally play it.
It's definitely one of my favorites, and not just because it's the first ATTACK MOUNTAIN game or because it's the first game I self-published.