Hardest: Friday the 13th for NES...can only be beaten with Game Genie..(runner up is Out of this World for SNES...beatable in 8 hrs if ur good, but otherwise will take a month easy)[snapback]153849[/snapback]
I had that game. It was hard. Star Fox was pretty hard for N64.
Easiest was probably 'barney hide and seek'. You could see the kids hiding.
Most Fun Game: Bevis And Butthead for Sega. My friend and I eventually found out the password to get into the back of burger world and we got the gwar tickets!