In the short intervening period since the previous post, a lot of spitballing and discussion has gone on, in the TNP Discord. Without belabouring the point too much, the combat mechanics have essentially been narrowed down to "keep 2d6," with the baseline assumption starting at rolling 3 dice; any two can be used as the attack roll (scoring a hit on a 10+) with the remaining dice used for damage.
So how does that hit-chance look, when a modifier is applied to it? (Calculated by using the highest 2 of 3d6):
- +0 = 35.65%
- +1 = 52.31%
- +2 = 68.06%
- +3 = 80.56%
From that, I would argue that we can eliminate +3 as an option for the combat math; the percentage is already too high, and the system needs to account for other bonuses. The basic idea would be that bonuses granted from class features, teamwork, etc. would add more d6s to the pool; much like TNP, extra dice not used for the attack roll would be used for extra damage -- and the attack roll would never exceed 2d6+mod.
For combat math, I think it's safe to assume that your highest modifier would always apply. It also means that on a "basic attack" the average damage roll (on a hit) would be the remainder of [2d6+2 - DC10]; if the average of 3d6 is 10.5, and at least an 8 needs to be added to the +2 in order to score a hit, that remainder ends up being 2.5 -- in which case, I would argue that it probably makes sense to also add this +2 modifier to the damage roll.
Now, moving away from combat, to the skills side of things...
If we use the TNP "skill grid" as our basis, we can rank skills by assigning a value to them, based on both their Attribute and their Skillset. If our assumption is that combat math is fueled by Attribute mods (which range from +0 to +2) then we have to shape our Skillset bonuses around that. That all being said, we don't need to give as much consideration to outside modifiers, the way that we would do with combat.
My first intuition was "Skillsets add ranks, and Attributes also add ranks," or in other words, neither adds a flat modifier, but both could add to the "d6 pool." The problem with this (as was brought to light in discussion) is that it amounts entirely to randomness, whereby you're just rolling more and more dice and hoping for some combination of 5s and 6s on two of those dice (or a 4 and a 6, obviously.) The upside is that even at "highest 2 of 6d6" the success rate is only just approaching 75% which also means that even by adding 4 additional dice to the baseline 3d6 roll, the math only then breaks the 80% mark. If the +3 modifier math was deemed too high for combat (because it reaches this 80% mark) then it stands to reason that a +2 cap for Attributes means a +1 cap for Skillsets, if these modifiers are meant to be potentially combined together. By letting one of these numbers be dice instead of a flat modifier, it gives us a bit more wiggle room for some variety. A +2 modifier added to "highest 2 of 5d6" (i.e. +2 dice to the pool) would cap out at just over 90% success rate -- which is basically the absolute ceiling of what I think would work, for skills.
This also begs the question of, in a spread of 5 Attributes, how many +2s, +1s, and +0s should a character have? If you're able to overlap two +2 Attributes with a +2d6 bonus on two Skillsets, suddenly you're at that mathematical ceiling, for something like 1/3rd of the skills in the game. If skillfulness is meant to be spread across a party of 4 or 5, then this wouldn't make any sense. It probably stands to reason that a well-rounded party would have one character with a +2 for each of the 5 Attributes -- meaning an Attribute spread of something like +2/+1/+1/+0/+0 as the default. By extension, this would allow bonus dice from Skillsets to have a bit more flexibility, since we only need to worry about one Attribute's worth of skills ever approaching that 90% (and of those, probably/maybe only one out of 3-4 applicable, overlapping Skillsets.)
Anyway, that's a lot of talk about dice probabilities and math. The challenge once you find a dice engine that hums, is how to convert that into something that feels like the type of game you want to be playing. In essence, you back-port the mechanics onto the character classes as best you can, rather than starting from the character concept, and trying to make up mechanics that fit and work.
...
As the blog schedule goes, the next post should be up on or about February 12th, so make sure to check back then!
No comments:
Post a Comment