I think I'm approaching the final boss in Narita Boy.
I'm also pretty far in Rygar on the NES on the Switch if that counts? I've never played the game before and I didn't understand the gameplay at first. After reading the instruction booklet it's a lot more fun lol.
It's a good little platformer. The music is great. I love the art style. Gameplay can be a little difficult at times because the controls are sensitive. There's a story and the dialogues take way too long and break the rhythm of the game a bit. Buy otherwise it's great.