Tabula has been played for at least 1,500 years, and bears a striking resemblance
to backgammon.
https://bgammon.org is a free online backgammon service, and support for playing
tabula games is now available. A computer opponent is available to play against,
and you can also play against other users. To the best of my knowledge, this is
the first time tabula is available to play online.
Tabula wiki:
https://en.wikipedia.org/wiki/Tabula_(game)
Tabula rules:
https://bkgm.com/variants/Tabula.html
Give it a try and let me know what you think of tabula compared to backgammon.