Hamartia (Ha-mar-ti-a; Greek meaning to err or miss the mark) is an originally developed, designed, and handcrafted dice game from The Happy Quacker. This game is intended for older children and adults, though younger kids can play with scoring assistance. A basic understanding of mathematical concepts is required to play this game.
 
Hamartia is a fast paced strategic dice rolling game where 2-4 players play with 2 dice and take turns rolling 1 dice at a time to score the highest amount of points possible for the round. Players score points by having their dice land on the margins, or fully inside the circles present on the board. If a player's dice ends the round not touching or landing inside a circle, then that dice lands in the "Hamartia" and subtracts 2 points from the resepctive dice. To add strategy to the game, players can knock each others dice on the board and change the scores for that round. The player with the highest score at the end of the round wins that round, and play restarts. Players use their 3rd dice to keep track of their won rounds, and play can continue up to 6 rounds max for an entire game.
 
See the full game rules linked below.