Hollow Knight
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. Hollow Knight was well received by critics and has sold over 3 million copies as of December 2020. A sequel, Hollow Knight: Silksong,  is in development.