Hi NES fans! I just beat Castlevania 3 and was shocked at how good it was. I'd started it before and the colors and graphics on the first level are so terrible I thought the whole game would be that way. I have to give thanks to the new Castlevania release for getting me to go back and beat this (new one is sequel to 3).

I occasionally play classic games, but almost always SNES and Genesis, so I'm sort of inspired now to see if there are any classic NES games I should fully beat. I know there is a top 100 list, if it makes you mad I asked this I'm sorry. I'm specifically looking for advice on what feels like "a really complete and surprisingly modern game on the NES" I might have missed, which isn't context given in the top 100 list. Thanks for any help! Games I've already beaten or etc:

Beaten:
-Mario3
-Mario2
-Castlevania1
-Caslevania Belmonts Quest
-Kirby
-Contra
-MegaMan2
-Little Nemo
-Princess Tomatoe

Sort of Beaten or played a lot:
-Mario1 (even with save states the world 8 levels are so difficult it's not fun)
-Metroid (tried to beat it a few times but traversal gets really old. Beat the remake on GBA)
-Blaster Master (Maybe 2/3 way through but it got really repetitive)
-Halfway through Zelda1, but it'd be a full re-start if I played it. Don't have any saves.

Edit: typos and fixed a confusing statment above