Battletoads & Double Dragon NES $15-$60

In this beat-em-up...Rash, Pimple, and Zitz from Battletoads, and Billy and Jimmy Lee of Double Dragon fame, team up to take on the forces of evil. The game was also available on the SNES and Sega Genesis...but the NES version is the hardest to find of the three. I would not really consider this game to be "rare" (especially when comparing it to some of the later games I have on this list), but it is definitely a lot less common than most other NES games. It's very hard to come across this in a pawn shop or used video game store (or as collectors like to say "in the wild")...but you will probably never have trouble finding a copy of it on Ebay. It usually sells for around $15-$20 if it's just the game cart only (or "loose")...but if it also comes with the box and booklet (CIB, or "Complete in Box"), than it will probably sell for around $40-$60.