Similar to regular soccer, except participants are wearing a 1.5-meter transparent inflated bubble exposing only their legs, kids and adults alike roll, flip, and bump into each other in bubble soccer games (also known as knockerball), bouncing off one another's bubbles and landing like overstuffed marshmallows on the ground. During games of Indy Bubble Soccer, bumping into the other players is as much fun as getting a goal. Players can rent bubbles for one-off events, including professional and collegiate sporting events, or join leagues to sharpen their technique in competition with other teams.