To cite package ‘lightsout’ in publications use:

Attali D (2023). lightsout: Implementation of the 'Lights Out' Puzzle Game. R package version 0.3.2, https://github.com/daattali/lightsout.

Corresponding BibTeX entry:

  @Manual{,
    title = {lightsout: Implementation of the 'Lights Out' Puzzle
      Game},
    author = {Dean Attali},
    year = {2023},
    note = {R package version 0.3.2},
    url = {https://github.com/daattali/lightsout},
  }