Game Concepts: Yahtzee & Yatzy

Yahtzee is a dice game made by Milton Bradley, which was first marketed by Edwin S. Lowe in 1956. The game is a development of earlier dice games, such as Yacht and Generala. The object of the game is to score the most points by rolling five dice to make certain combinations. The dice can be rolled up to three times in a turn to try to make one of the thirteen possible scoring combinations. A game consists of thirteen rounds 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. (Wikipedia)

Scandinavian Yatzy

Nowhere, it seems, is this type of dice game as popular as in Scandinavia. It is called Yatzy here, the name is public domain. Some of the oldest computer implementations are from here, and in relation to the total population and the total number of games, more than from anywhere else. As of 2011-06-15, more than 10% of the Scandinavian games on Download Central are Yatzy implementations!

Yatzy has some variants unknown to Yahtzee. One is the forced game, which means that you have to score your throws in the exact order the categories are listed, first the ones, than the twos, and so on. This variant seems to be a specifically Norwegian thing: Both Norwegian implemetations ask right at the beginning if you want to play a forced (tvungen) or free (valgfri) game, and only Norwegian Wikipedia mentions it.

Another one is Maxi Yatzy (also known as Super Yatzy in Denmark), which is played with six instead of five dice. Ove Lautensack's Mega Jatsy is the only implementation I have found so far.

American Yahtzee

In the USA, Yahtzee enjoyed some popularity with programmers in the era between 1988 and 1996, when in the wake of Tetris all kinds of puzzle games became popular. Nearly all of these implementations either sported character graphics or ran either on 16-bit Windows or Macintosh. Michael Wollert's Yatz is the only graphic DOS game that I have found. Only few of the Windows games were ported to 32-bit Windows (YahtC, Ancient Ivory, Ancient Yacht), and so far I have not found an original 32-bit Yahtzee from the USA.

Scandinavian Yatzy
Yatzy
Yatzy
Yatzee
Yatzee
Mega Jatsy
Mega Jatsy
MZ-Yatzy
MZ-Yatzy
SpyYatzy
SpyYatzy
Yatzy
Yatzy
Yatzy
Yatzy
American Yahtzee
Yatz
Yatz
Yahtzee
Yahtzee
Amanda's Yahtzee
Amanda's Yahtzee
Kismet
Kismet
Triple Yacht!
Triple Yacht!
Triple Yahoo!
Triple Yahoo!
Triple Yahtzee
Triple Yahtzee
WinYotZ
WinYotZ
Yacht-Z
Yacht-Z
YahtC
YahtC
YZ
YZ
Ancient Yacht
Ancient Yacht
In Other Countries
Brigzee
Brigzee
Dicestar
Dicestar
YA-zee
YA-zee
Yahtzee
Yahtzee