The knight wields a 'nail', which represents various blades in the story (excluding pins and needles), used both in combat and environmental interaction. The player controls an insect-like, silent, and nameless character while exploring the underground world. Hollow Knight is a 2D Metroidvania action-adventure game, that takes place in Hallownest, a fictional ancient kingdom. A sequel, Hollow Knight: Silksong, is in development. Hollow Knight was well received by critics and has sold over 3 million copies as of December 2020. The player is the Knight, a nameless warrior not knowing who they are or where they came from, who wanders and explores the ruined kingdom of Hallownest to figure out its mysteries, finds many friendly or enemy bugs, fighting bosses, and unlocking new powers and abilities to progress.

Development was partially funded through a Kickstarter crowdfunding campaign, raising over A$57,000 by the end of 2014. It was released on Microsoft Windows, macOS, and Linux in 2017, and on the Nintendo Switch, PlayStation 4, and Xbox One in 2018. Hollow Knight is a 2017 Metroidvania action-adventure game developed and published by Team Cherry.

Hollow knight free pc