In Loony Balloon the player controls a child carrying a waving balloon that crosses a playground.
To exit the playing field, he must reduce the swing of the ball or it will burst when he crosses the exit. To do this he must earn 50 points playing in the various amusements of the playground.
There are four types of entertainment: a rocking horse, a slide, a roundabout and trees.
The boy will also find threats to his balloon along the way, such as birds crossing the screen from left to right, trying to blow it up, and sudden gusts of wind that will remove the balloon from the boy’s grasp if he stops for too long.
The boy can release the balloon at any time and grab it again by pressing the action button. If the ball hits a wall it will burst and the game ends. The longer you play, the faster the balloon will rise if released.
There are 10 difficulty levels.
From levels 0 to 4 the layout of the playground is fixed. From levels 5 to 9 the walls of the playground will appear, disappear and change position.