77. Ghosts 'N Goblins (NES)

To this day, I still consider this one of the hardest games ever played.  Punch-Out was hard, but beatable.  This game?  Just not beatable.  But that didn't stop children from trying.  an instant classic.  Even today I would consider this a go-to game in terms of fun and challenge.  I think even today it could contend with some modern-day great games.