SuperYatzy (Also known as ZenDice) 
About the game 
SuperYatzy is a dice game like such games as Yacht, Yot, Generala, Cheerio, Yatzy, and Yahtzee (Yahtzee trademarked by Hasbro).
You roll the dice to get different combinations in order to score as many points as possible. The dice can be rolled up to three times each turn (or four, depending upon which version of the game you're most familiar with) to try to make one of the 18 possible scoring combinations. There are 18 rounds in a game, during which the player chooses which scoring combination is to be used in that round. Once a combination has been used in the game, it cannot be used again.
Because there are tons of different rule variations, there is an option to choose the version that your family played when you were growing up. Select your game type from "Normal" (three rolls), "Easy" (four rolls), "TopDown" (you get four rolls, but you have to score everything from the top of the score sheet from ones down to Yatzy in sequence), "BonusScore" (in which scores in the lower section made in one roll receive double points), "RollSaver" (unused rolls are passed to the next round), "5dice Classic", "NordicClassic" games or an easy variation of BonusScore and RollSaver games with 4 rolls.
SuperYatzy will suggest which dice to hold and which score to score. This is great for kids. Of course the player can always select something else. The game provides a lot of different game styles, and is a fun way to pass the time.
Each rule variation has a set of achievements and you can collect a trophy for each achievement you complete.
Be the first to break a 1000 points in a Bonus&Saver game or make it through a TopDown game without zeroing out a score.

Basics 
Press the roll button to roll the dice. Move dice you want to keep to the hold area. You can click or slide them between the hold and roll area. The computer will suggest a score that matches the dice you have. If you want a different score, you can select it by tapping in the scoresheet. When you get the dice for the score or run out of rolls, you score by clicking on the score button . If you do not have the dice for the selected score, you will get zero points in it. If you select a wrong score by accident, you can use the undo button to undo and select a different score. You can not undo the last roll in the game! 
The goal 

With the 6 dice, you try to get as many points as possible in each score. 
The upper section 
In the top part of the score sheet, you try to get as many ones, twos etc. as you can. If you get more than 84 points total for the six scores, you receive a bonus of 50 points. You need an average of 4 of each dice to get 84 points. Some rule variations have different bonus and points to get bonus. 
The lower section 
In the lower part of the score sheet, you need to roll different combinations of dice.
1 pair : 2 dice of the same kind. Max score 12 points.
2 pairs and 3 pairs: Like one pair. Each pair has to be unique. Max score is 22 and 30 points.
3 and 4 of a kind: 3 and 4 dice of the same kind. Max score is 18 and 24 points.
2x3 of a kind: 2 times 3 of a kind. Each of the dice sets has to be unique. Max score is 33 points.
Small 15: Get the dice 1,2,3,4 and 5. Score is 15 points.
Large 26: Get the dice 2,3,4,5 and 6. Score is 20 points.
Royal: Get the dice 1,2,3,4,5 and 6. Score is 30 points.
House: 3 of a kind and 1 pair. Each set has to be unique, so 5 dice of the same type does not count. Max score is 28 points.
Chance: Any dice will do here. Max score is 36 points.
Yatzy: 6 of the same kind of dice. You score the total of the 6 dice + 50 points. If you get 6 ones, you score 100 points.

SuperYatzy score examples 
score  dice  points 
Ones   4 
Twoes   8 
Threes   12 
Fours   16 
Fives   20 
Sixes   24 
One pair   12 
 8 
Two pairs   22 
 8 
 zero 
Three pairs   30 
 16 
 zero 
3 of a kind   18 
 3 
4 of a kind   24 
 12 
2x3 a kind   33 
 21 
Small 15   15 
Large 26   20 
Royal 16   30 
Full house   28 
 17 
Yatzy   30 +50 
 36 +50 
 100 
Rulevariation scores 
score  dice  points 
Classic Small straight   30 
 30 
 30 
Classic Large straight   40 
 40 
Classic 3 of a kind   18 
 3 
Classic 4 of a kind   24 +3 
 12 +5 
Classic Full house   25 
 25 
Enjoy the game.
