To cite package ‘twenty48’ in publications use:

  Rossell Hayes A (2024). _twenty48: Play a Game of 2048 in the
  Console_. R package version 0.2.1,
  <https://github.com/rossellhayes/twenty48>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {twenty48: Play a Game of 2048 in the Console},
    author = {Alexander {Rossell Hayes}},
    year = {2024},
    note = {R package version 0.2.1},
    url = {https://github.com/rossellhayes/twenty48},
  }