Cups 'N' Dice is a boardgame that provides many of the public domain cup and dice games all in one game set. This includes "Farkle", "Yatzy", "Bunco", "Mia", and many more games. These games normally involve pen and paper scoresheets, but cupsndice.com provides them in a digital format.
Most of the games provided by Cups 'N' Dice are public domain. By pairing the game set with a digital UI at the website, cupsndice.com also provides games that are unique from the public domain. This includes "Cant The Dice Game" a team based secret signal game, and traditional "Liar's Dice" with the newly added power-up dice, team-play and mystery-cup.
Speaking of Liar's Dice, the website provides a rule generator that can create over 200,000 variations of "Liar's Dice" games. You can play the simpler presets, but once you get comfortable with the game you can randomize the rules and play a different version of "Liar's Dice" every time