When designing a game, it's important to consider what kind of experience you want the players to have. Most people play games because they want to have fun. That means something different for everyone--some people like to solve challenging puzzles, some want to laugh with their friends, and some want to be drawn into an exciting story--but the one thing all players share is a desire to have some kind of good experience.
Did you know that when you roll two dice at once and add them together, some results are more common than others? By itself, one die has an equal probability of giving each result, 1 through 6. The die can only land on one side at a time, of course.
A common game mechanic in some of the world's most popular games is called roll and move. Roll and move is when players roll dice (or use other ways to generate random numbers, like a deck of cards) and use the result to move their character around the board. If you've ever played Monopoly, Candy Land, Clue, or Sorry, you've played with this mechanic.