The First Descendant is a free-to-play massively multiplayer online role-playing looter shooter developed and published by Nexon Korea Corporation.

Players take on the role of "Descendants", individuals who possess mysterious powers and have become humanity's only hope against the hostile Vulgus, an invasive alien race.

[3] The game features an arsenal of weapons, ranging from submachine guns to launchers, each with their own power levels and effects.

These occur at the end of the story chapter and prepare the Descendant for the increase in stats necessary to progress to the next battle area.

[6] The map remains the same, however, the enemies become much harder to fight, while the quality of the rewards increases to reflect the differences between the difficulty modes.

However, the Vulgus and Colossi began the invasion to search for a mysterious power source called the Ironheart, believed to be on Ingris.

[13] The game received mixed reviews on Steam at launch, with players criticizing its grind and feeling it incentivized purchasing microtransactions.

[14] Despite this, the game topped Steam's best-sellers chart upon release,[15] and reached a player count of 10 million during its first week.