Save The Cat Game
Fill the balloons to reunite the old lady with her cute Kitten. If you overshoot you can use the weights, but don't use up all of your chances! This was inspired by Lawnchair Larry, who took flight in his Lawn Chair after attaching 45 helium balloons. He reached a height of 3 miles!
If you are interested we now have The Making Of Save The Cat which details how this game was created.