Four smiths have to create a knife from the most mangled mess of a vehicle ever seen on the forge floor; the two surviving smiths return to their home forges to re-create a matched set of curved katars.

Four smiths must forge signature blades from W-1 steel without the aid of any electricity (i.e., in candlelight during a "blackout"). The two finalists return to their home forges to recreate the blunt-tipped Sword of Mercy, the English blade still used today for coronations. Who will step into the light from this challenge and be crowned Forged in Fire Champion and win $10,000?

Four smiths forge their own version of a ninja blade, with the smith with the lightest blade winning an extra 20 minutes in round two.

Four bladesmiths must forge a knife out of thin sheet metal; two smiths move on to re-create a serrated Indian sabre.

The bladesmiths must forge a sawback machete out of steel tent stakes; two smiths return to create the Parang Nabur, a deadly Malaysian backcountry tool and weapon.

Four bladesmiths face double the trouble when they are tasked with forging not one, but two canister Damascus knives; after a brutal round of testing, only two smiths move forward to build an extremely challenging Cinquedea sword.

The first-ever knife fight; competitors bring their best blade; after two rounds, only one will survive the knife fight and walk away with $10,000.

Four smiths re-create the iconic Gaucho knife; the two smiths whose weapons pass the test must then forge the ornate Argentinian saber; after another brutal round, only one smith will finish the competition with a bounty of $10,000 and the title.

Four smiths are given a small sliver of high carbon steel and a whole lot of mild steel to forge a knife; the two surviving smiths whose knives make the grade then re-create a sword credited with helping win a war: Sgt. William Hayden's sword.

Four bladesmiths go back in time to the Revolutionary War to forge a Rifleman's Knife.

The judges flip the script once again, letting the bladesmiths choose their challenge; after an intense bout of testing, the judges take back control; they challenge the two surviving smiths to re-create an 18th-century Tibetan sword.

Three bladesmiths head to Mystic Seaport for a nautical-themed competition; after a grueling round of coal forging, two smiths travel back to their home forges to re-create the flensing knife.

The forge is transformed into a Gladiator's arena. In the opening battle, two smiths must forge a fierce Roman Era Falx.

The defending smithing champion seeks to retain his title by building a Gladiator favorite: the Kopis.

The reigning champion of the forge sets their sights on a new challenger and a new weapon: the deadly Sica, a gladiator favorite.

It's back to the Colosseum for the last two one-on-one battles; the reigning champion has defeated six opponents, but now must face a returning challenger and forge the intricate Acinaces sword.

Four smiths need to either go mai or go home when they're challenged to make a five-layer knife; after their blades are put through a grueling round of testing, the two remaining smiths return home to re-create the notorious 16th-century Naga sword.

In one of the most unique first rounds in Forged in Fire history, four bladesmiths must giddy-up to finish their blade first and become the fastest blade in the West. After a wild round of testing, the two remaining smiths return to their home forges to lasso up an iconic weapon of the American Frontier -- the Vaquero Machete. They then must survive one final standoff to win the reward of $10,000 and the title of Forged in Fire Champion.

Four bladesmiths put it all on the line when they are challenged with creating their most dazzling Damascus knife; the smith who impresses the judges the most will bypass a brutal round of testing, heading straight to the final round.

Two friends and two brothers enter the forge as teams to compete in an epic showdown; after working as teams to re-create a Scottish Broadsword, members of the victorious team will be divided and forced to face each other.

In the first of a four episode event we're calling SUPERSIZED, four smiths must salvage steel from a massive railroad track to make their signature big blades. Then, two smiths head back to their home forge to build the biggest weapon in Forged in Fire history: a monstrous seven-foot sword wielded by legendary warrior, Grutte Pier. Which smith will rise to this colossal challenge and take home $10,000?

Four smiths must salvage steel from a couple of 250-pound coil springs to make massive San Mai blades; two smiths head back to their home forges to create a pair of enormous Elephant Swords.

Four smiths face an enormous challenge when they must salvage steel from five tons of junk; two smiths head to their home forges to build the longest weapon in the show's history, a nine-foot Friauler Spiess.

The bladesmiths assemble as Marvel takes over the competition; tasked with forging iconic weapons from Marvel's video game, "Midnight Suns," the smiths must defeat the evil clock to build their blades.

Four smiths face a colossal challenge when they must forge giant hog splitters from 12 pounds of steel.