The BEST episodes of Unchained Reaction

Every episode of Unchained Reaction ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Unchained Reaction!

Unchained Reaction is a science and engineering reality game show set to air on the Discovery Channel. It is judged and executive-produced by Adam Savage and Jamie Hyneman, best known for hosting the science entert

Last Updated: 2/8/2026Network: DiscoveryStatus: Ended
Movie Mayhem
star
8.30
66 votes

#1 - Movie Mayhem

Season 1 - Episode 6 - Aired 4/22/2012

Rick Baker is the guest judge as Team InSaign (metal workers) and Team Fail Fail Fail Win (multi-media artists) fight for best machine.

Watch Now:Amazon
Jack of All Trades
star
7.80
179 votes

#2 - Jack of All Trades

Season 1 - Episode 5 - Aired 4/15/2012

Designers and construction workers square off to build the most impressive multi-step tool-themed machines, but tensions rise amongst both groups and one team finds itself at odds with its machine.

Watch Now:Amazon
Speed
star
7.70
205 votes

#3 - Speed

Season 1 - Episode 3 - Aired 4/1/2012

Horror movie-effects specialists battle motorcycle mechanics in the fight to build the meanest speed-themed machine.

Watch Now:Amazon
Take Flight
star
7.60
65 votes

#4 - Take Flight

Season 1 - Episode 4 - Aired 4/8/2012

A team of engineers goes up against a group of artists in this flight-themed build. Will their machines get off of the ground? Or crash and burn?

Heavy vs. Light
star
7.46
216 votes

#5 - Heavy vs. Light

Season 1 - Episode 1 - Aired 3/18/2012

Adam and Jamie challenge electronics experts and set carpenters to build the most creative multi-step "heavy-vs-light" themed machine.

Directors: David Dryden
Fire and Ice
star
7.43
216 votes

#6 - Fire and Ice

Season 1 - Episode 2 - Aired 3/25/2012

Rocket scientists and special-effects artists go head-to-head in their effort to build the very best fire-and-ice themed machine.