Backgammon is one of the oldest board games still widely played — roughly five thousand years old — and it remains popular because it balances luck and skill unusually well. Dice decide what you can do; you decide what to do with it.
You move fifteen checkers around the board toward your home quadrant, then bear them off. A lone checker can be hit and sent back to the start, so the game is a constant negotiation between racing ahead and staying safe.
A single checker alone on a point. It can be hit by an opponent's checker landing there, sending it back to the bar to re-enter from the start — usually a serious setback.
Both, and unusually well balanced. The dice decide your options, but choosing between them well is a substantial skill — which is why strong players beat weak ones consistently over a series.
Yes — tap the dice and your checkers. Nothing to install.