Unchained Reaction

Two teams of electronic experts have a build-off to determine which team has the most creative multistep machines.

A team of rocket scientists and a family of special effects artists compete to build the best fire and ice themed multistep machine.

Special effects artists and motorcycle mechanics face off to build "Speed" themed multistep machines.

Engineers go up against a group of artists to build a multistep machine with the theme of flight.

Designers square off against construction workers in a bid to build the most impressive multi-step machine with the theme of tools.

Multimedia artists go up against metalworkers in a competition to build a multistep machine with the theme of movie mayhem.