Kingdom: Legendary War is a high-stakes K-pop reality competition series produced by Mnet.
Originally airing from April 1 to June 3, 2021, the show served as the high-profile sequel to the 2020 preliminary series Road to Kingdom.
The program’s primary goal was to crown a “King” among established boy groups through a series of intense, large-scale performance rounds.
As of April 2026, the series is remembered as a pivotal moment for the “Fourth Generation” of K-pop, particularly for its role in solidifying the global dominance of its participants.
The Lineup: Six “Legendary” Contenders
The show featured six boy groups, ranging from industry veterans to rapidly rising stars. Each group brought a distinct identity to the stage:
- Stray Kids: Known for their self-produced, experimental “dark” sound.
- ATEEZ: Renowned for their high-intensity, “pirate-themed” theatrical performances.
- The Boyz: The winners of Road to Kingdom, famous for their creative and acrobatic use of props.
- BTOB: The vocal powerhouses of the competition, focusing on emotional live harmonies and ballad rearrangements.
- iKON: Brought a “hip-hop festival” energy and relaxed, street-style charisma.
- SF9: Utilized their “model-like” visuals and sophisticated, cinematic choreography.
Competitive Structure and Scoring
Unlike traditional survival shows where individuals are eliminated, Kingdom was a cumulative points-based battle where all six groups stayed until the finale.
The scoring was weighted to balance industry expertise with global fan power:
- Experts’ Evaluation (25%): A panel of 30 professional judges.
- Self-Evaluation (25%): Groups voted for each other’s performances.
- Global Fan Vote (40%): Conducted via the Whosfan app.
- Video View Count (10%): Measured YouTube performance metrics.
Key Rounds of the War
The competition was divided into four main stages, pushing groups to reinvent their sound and image:
- Round 1 (To the World): Groups performed rearranged versions of their own representative hits.
- Round 2 (Re-born): A “song swap” round where groups reimagined a competitor’s track (e.g., Stray Kids covering BTOB’s “I’ll Be Your Man”).
- Round 3 (No Limit): This was split into “Unit Stages” (Rap, Dance, and Vocal collaborations between groups) and “Individual Stages” with zero creative restrictions.
- Final Round (Who is the King): The groups released brand-new digital singles and performed them live in a grand finale.
The Winner and Legacy
Stray Kids emerged as the final winners on June 3, 2021, after earning the most points across all rounds.
Their victory was a massive catalyst for their career; in the years following the show, they achieved multiple #1 albums on the Billboard 200 and became one of the most-streamed groups globally.
As of 2026, the show is credited with establishing the “Big 3” of the fourth generation- Stray Kids, ATEEZ, and The Boyz (often calledKingdom: Legendary War “ZZA”).
While Mnet has recently shifted its focus to other formats like Road to Kingdom: Ace of Ace (2024-2025), the original Kingdom: Legendary War remains the gold standard for high-budget K-pop performance production.
