In one of my design, I need a greater dice range than 1D6 so I was thinking of using 1D10 or 1D12. The problem is that for print and play games D10 and D12 are less common to find. So I want to use D12 and give the player the option to resolve the rolls with 2D6 instead of D12.
I know that the odds distribution is really different. For example a simple +1 can give up to 6/36 in odds increase while D12 will always give 3/36 odd increase.
I still think it could create an interesting effect.
There is also another pair of dice(don`t remember the name) which gives equal odds between 2-12 by rolling 2d6. That could be another option.
Do you think it cold be interesting to have a system compatible for both type of dice or so you think the odds would be so much different that it would completely change the game?
So it could be done with a D6 and a D2. Where one of the face on the D2 adds 6 to the first roll.
The D2 could be a die of another color. If you roll even, you add 6. Or it could be a custom die with values 0,0,0,6,6,6.
It is more simple indeed.
Else I have been analyzing the odds. One of the problem is that the more you increment, the less bonus you get.
For example, let say you need to roll 7 or less to succeed. Each dice system 2D6 and 1D12 has the same odds: 21/36.
From there getting a bonus to the dice roll will give differente results
D12: +1= add 3/36 for each bonus.
2D6: +1= add 5/36, +2 = add 4/36, +3= add 3/36
With 2D6, the more bonus you get, the less powerful they are. Personally, it would have preferred the opposite effect, the more bonus you have, the more effective they are because combined together they are better than used individually.