Well over the past 4 days I dug up some tough NES games that I couldn't beat when I was younger or they were listed on the Hardest games of all time discussion. So suggest some games to beat that aren't strategy or RPG. I guess i'm looking for more action and adventure games.
I've beaten in the past 4 days:
ninja gaiden 1, 2, and 3
battletoads
ghost 'n goblins
I think i'm going to tackle Bayou Billy tomorrow.