Each turn, roll five dice. You may re-roll any or all of them up to two more times, trying to build one of the scoring combinations below. At the end of your turn, write your result into any one open category — you must fill every category exactly once over the course of the game, even if that means writing a zero somewhere.
Upper section (Ones through Sixes): score the sum of just the matching dice. Fill in all six and if their subtotal is 63 or more, you get a 35-point bonus — that's roughly what you'd have if you averaged three of each number.
Lower section: 3 of a Kind and 4 of a Kind score the sum of all five dice (not just the matching ones) if you have at least three/four matching. Full House (three of one number, two of another) is worth 25. Small Straight (four in a row) is 30, Large Straight (five in a row) is 40. Yahtzee (all five matching) is 50. Chance is the sum of all five dice, no combination required — a good catch-all for a bad roll.
If you roll a second Yahtzee after already scoring 50 in the Yahtzee box, it's worth a 100-point bonus (stacks for each extra one) — see the Options button to turn this off if you're playing a simpler house-rules game.
Highest grand total once every category is filled for every player wins.
Enter the score for each category as you play — leave a box blank until it's used. Upper section gets a +35 bonus at 63+. Bonus Yahtzees can be turned off in Options.