What are some sick 16-bit Co-op games?

[Words Of Wisdom]

Chrizum said:

@ Words of Wisdom:

Is it possible to play Secret of Evermore with 2 players? You sure??

In addition to the lists posted: Goof Troop for the SNES is pretty fun with 2 players (coop).

IIRC one player controls the boy and one controls the dog.  However the dog isn't always around so it's not perfect.  Much akin to the Secret of Mana games and how it takes a little bit of play time to get the first character.