Co-op Experience - Gameplay is similar to A Link to the Past and other 2d Zelda games. But stripped down and much shorter. For a while, this was the closest thing to a 2 player Zelda game.
Co-op Experience - The game starts with only one player. As you add members to your party, other players can control them. The game allows up to five players. If a character dies, they can not be used again for the whole game. The combat is clunky, making the game very difficult.
Co-op Experience - At any time during gameplay, Kirby can summon Gooey. Doing so costs two hit points. Gooey shares the same abilities as Kirby, and is able to use his tongue to eat enemies and copy their powers.