Twilight of the Sun King is a rules set taking a minimalist approach to game mechanics. The core of the system is the morale check. If a unit fails a morale check, a hit is scored. Most units can take 2 or 3 hits before being removed from the game. Oddly, the game designers chose the sum of 2 average dice for the random element in a morale check. I suspect they wanted a limited range of outcomes yet they wanted the middle results to be most common. Given that there are only 3 results (Pass, Fail or Destroyed), it seems to me that this could have been done in a better way.

### Analysis

If a morale check total is 8 or more, the unit passes. If the morale check is 7-5, the unit takes 1 hit. If the morale check is 4 or less, the unit is immediately removed from the game.

With the sum of 2 average dice, a 5 or 6 will come up 1/3 of the time. Similarly a 8 or 9 comes up 1/3 of the time. A 7 will come up about 27.78 percent of the time. The outliers (4 and 10) each come up 2.78 percent of the time. Thus, a unit passed a straight up morale check 36.11 percent (slightly ore than 1/3) of the time. They fail 63.89 (slightly less than 2/3) of the time. 2.78 percent is an automatic removal of the unit. Rolling 2D6 would be an obvious solution but there is a problem. The spread from pass 2 destruction (8 to 4) is only 4. If you roll 2D6 you would either have a spread of 6, which throws off the modifiers to morale checks, or you would have automatic destruction occur many more times that intended. A ‘4’ would occur 16.67 percent of the time which is 6 times more than intended.

### The Change

Ignoring the outliers, we can generalize and say that a unit passes 1/3 of the time and fails 1/3 of the time. That neatly works on a single D6. A unit passes on a 5+ and fails on a 4-. We could say that a unit is destroyed on a 1 but that would also occur 6 times more than intended. My solution is to make a result of 0 an automatic destruction. So, using a single D6, a 5+ is a pass, a 1-4 is a fail and a 0 or less is a destruction. The observant will not that a unit will pass 2.78 percent less than before. But you should also note that a unit that has 0 or more positive modifiers cannot be automatically destroyed. That’s probably a fair trade. Also, while the spread for pass to destruction is 5 instead of 4, it will still likely not break the system.

### Conclusion

It is clear to me that the designers of the game wanted units to fail morale checks often with only a small chance of a catastrophic failure. However, 2 average dice are not necessary for morale checks in the game. You can yield similar results with a single D6, which I hope most gamers will appreciate.