Balloon Kid is a flying platform game developed by Pax Softnica and published by Nintendo for the Game Boy on October 5, 1990 in North America and on January 31, 1991 in Europe. It is the sequel to Balloon Fight. It was never released in Japan for the original Game Boy; however, two years after its original release, a licensed Family Computer port titled Hello Kitty World was reprogrammed and released by Sanrio's subsidiary Character Soft exclusively in Japan on March 27, 1992. A Game Boy Color edition with a few new features titled Balloon Fight GB was released in Japan on July 31, 2000.
In 1-player mode, the gameplay is an arrangement of the Balloon Trip mode of Balloon Fight, where the screen automatically scrolls toward the left, while the player controls Alice that uses two balloons to float into the air with. To make her float in the air, the player must press (and sometimes hold) the A button to make her wave her arms to hover upward. Alice also has the ability to remove her balloons and walk on the ground, as well as jumping. If both of her balloons are popped or removed, and if she lands safely, she can inflate two new balloons and fly again.
The object of this mode is to travel from the beginning to the end while collecting balloons left by Alice's brother, Jim, along the way. The player must also prevent Alice from bumping into enemies that are attempting to pop her balloons, push her or kill her altogether. Some enemies, such as Balloon Birds, came from Balloon Fight. The giant fish that eats anyone who flies too close to the water, also came from Balloon Fight. There are four bosses in Balloon Kid. To defeat them, the player must make Alice fly about them and make her detach her balloons to bounce on them. She also can jump and stomp on them, whenever it is safe for her, like in other typical platformers.
The 2-player mode is loosely based on Balloon Fight's Game A and Game B modes, where one player battles against another player. One player controls Alice, while the other controls Alice's friend and eternal rival: Samm. The goal is to collect more balloons than the other player before they arrive at the end of the stage.
Balloon Kid's 'Balloon Trip' mode is based on Balloon Fight's mode of the same name, but with Alice instead of a Balloon Fighter. Everything else, including the BGM itself, are unchanged from Balloon Fight's Balloon Trip mode.
Balloon Kid takes place in a small part of an unnamed, Earth-like world. The only city in this part of the world is a town known as Pencilvania, a little town with pencil-shaped skyscrapers. Other places this part of the world are these unnamed locations in order of appearance: a forest, an ocean with a giant whale, an icy mountain, and an industrial building. The very first place a player starts from is a small house in a rural part of Pencilvania. There lived a brother and sister who loved to play with balloons. Alice and her younger brother, Jim, would spend endless days filling the skies with their balloons.
One day, Jim filled all his balloons and tied them together to make a beautiful balloon rainbow across the sky. 'What a great idea this was, Jim,' said Alice, 'but please be careful!'. Just then, a strong wind blew and Jim was carried away into the sky. 'Oh, no! This is terrible, I must save Jim!', thought Alice. Meanwhile, Jim, who was a very clever boy, thought, 'I wonder how Alice will find me.........Wait! I've got an idea. I'll leave a trail of balloons for Alice to follow!'.
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