Yatzy Plus Scorecard

This app is meant as a replacement for the traditional paper Yahtzee© sheets that you use while playing the popular dice game. You will still use your own dice to play. 
However, this is not the usual Yahtzee game. Just like with triple Yahtzee© there are multiple columns, but this time there are six columns to play.
Rules:
* There are multiple columns with each different rules:
N: This column is according to the traditional rules of the Yahtzee© game
B: For this column you first need to complete the upper half of the column before you can go to the lower
O: For this column you first need to complete the lower half of the column before you can go to the upper
Arrow down: In this column you have to go from the the aces all the way down to chance, one by one
Arrow up: In this column you have to go up from chance all the way up to aces, one by one
Y: This column is only unlocked as soon as you have a Yahtzee©
* There is an higher score multiplier for each column towards the right, starting with 1x for column N and 6x for column Y
* You have to score at least 63 points in the upper half to get a 35 point bonus
* The game is finished as soon as the whole sheet is completed and no green fields are remaining
Features:
* Only the fields are enabled that you can use, if a field is still grey this means that you first have to complete another green field first
* If you choose a field to enter your score you will only see the scores available to that field
* If you press "Rounds" in the upper-left corner you will see your all-time topscore
* The "Grand Total" at the bottom of the screen shows your overall score for the game
* If you want to cross out a field you use long-press on that particular field
* You can play a total of three games at the same time, the score for each game will be saved after each change
* If you want to reset a game you can use the trash icon, only the game that is selected at the moment will be reset
* There are two color choices, intense and pastel colours