Two knock-out rounds to decide which two robots will battle against Dead Metal, Shunt & Sir Killalot in the arena at the end of the show. Competing robots: Paul Bunyan, Snake Bite, Night Stalker, Rosie the Riveter 2, Buzz, Ninjitsu, Snookums, Medusa Oblongotta.

Robots from the USA and the UK battle each other in a straight knock-out competition to see which nation has the best robot. Competing robots: USA: Manta, Joker, Brawler, General Chompsalot 2 UK: Wowot, Tornado, Kat 3, Razer

Sixteen robots are paired into teams to battle each other. Only one robot from each team is allowed in the arena at a time and the teams can switch robots by 'tagging' them. Competing teams: Trackzilla & Trilobyte, Mad Cow Bot & Texas Tornado, Sir Force A Lot & G-Force, Bang & Snookums, Rocky-Bot-Boa & Black Widow, Joker & The Falcon Mark 2, The Termite & General Chompsalot 2, Hyperactive & Mechadroid

Six robots will enter the arena together and one robot would be knocked out in each round until there is one robot left standing. Competing robots: Brute, Cyclone, Hyperactive, Revenge, The Termite, Thor's Hammer.

The winners from the previous heats compete for the US Robot Wars Championship

Competing robots: Buzz, Tyranabot, Xylon, The Falcon Mark 2, Bunny Attack, Paul Bunyan

Competing robots: General Chompsalot 2, Marauder, G-Force, Run Away, Destructive Criticism, Lightning Tracks

Competing robots: Tricerabot 3.0, Brawler, Diskotek, King of Diamonds, Dragbot, The Termite

Competing robots: Rosie the Riveter 2, Basenji, Night Stalker, Techno Trousers, Darkness, Mechadroid

Competing robots: The Gap, Trackzilla, The Revolutionist, Snookums, Psycho Chicken, Propeller-Head

Competing robots: Brute, Sir Force A Lot, Conquering Clown 2, Texas Tornado, Black Widow, Unibite 2.0

Competing robots: Manta, Mad Cow Bot, Trilobyte, Rocky-Bot-Boa, The Bat, Medusa Oblongotta

Competing robots: Panzer Mk 4, Joker, Snake Bite, Cyclone, Spin Doctor, Probophobia