[1] It was known as the first part of the male counterpart of Queendom, and the prequel of Kingdom: Legendary War.

[6] Similar to Queendom, there would be Comeback Singles (newly produced songs) released on June 12, 2020.

During the season, special interview clips with Queendom contestants Park Bom, AOA (Chanmi), Mamamoo (Solar, Hwasa), Lovelyz (Mijoo, Kei), Oh My Girl (Hyojung, YooA) and (G)I-DLE (Soyeon, Yuqi) were shown in episode 1, as they shared their first thoughts about Road to Kingdom.

On October 29, 2020, Mnet confirmed the sequel of the show titled Kingdom: Legendary War (킹덤: 레전더리 워), and was aired on April 1, 2021.

[15] On April 24, 2024 Mnet confirmed that season 2 of the show will be produced, and would air by the second half of the year.