Math help with a new buy point system.


Homebrew and House Rules


So this is probably not new but I was looking to make a buy point system where your stats are already modded.
So instead of saying;str 18, dex 10, con 14, int 12, wis 16, cha 20.

They would just be; str 4, dex 0, con 2 and so on.

So would a buy point of 15 turn into 6 or 7 ?

Sorry I'm having a hard time explaining this, I hope it makes sense to someone.

Thanks all !

Scarab Sages

the most you could get w/out dumping stats in a 15 point buy is 3 +2 mods and 3 +1 mods. So a 9 mod total if you spent points as efficiently as possible.

A 4 Mod in normal buy costs 17 points. Of your 15, that's 113% of your total buy. So, to get as close to that as possible (assuming you want the same power level since you said 15 point buy specifically)

0-1 1 point
1-2 1 point
2-3 3 points
3-4 5 points

With a 9 point buy, this gets you 3 2 mods and 3 1 mods if you spend most efficiently. This also cost 110% of your starting points to get a +4 mod... The closest you can get to the 113% of the standard 15 point buy.


Well, assuming you don't have a way to model what would normally be odd numbered stats, you could just go:

PB Mod
-2 = -1
0 = 0
2 = +1
5 = +2
10 = +3
17 = +4

Going 1 point = +1 mod doesn't really work as an equivalent of the normal Pathfinder Point Buy. For example, buying an 18 with the normal system represents spending 85% of 20PB, and 113% of 15PB. There's not really a good way to keep that sort of ratio easily.

Of course, that doesn't matter at all if you don't care about sticking with how the normal PB has things.

Scarab Sages

The Archive wrote:

Well, assuming you don't have a way to model what would normally be odd numbered stats, you could just go:

PB Mod
-2 = -1
0 = 0
2 = +1
5 = +2
10 = +3
17 = +4

Going 1 point = +1 mod doesn't really work as an equivalent of the normal Pathfinder Point Buy. For example, buying an 18 with the normal system represents spending 85% of 20PB, and 113% of 15PB. There's not really a good way to keep that sort of ratio easily.

Of course, that doesn't matter at all if you don't care about sticking with how the normal PB has things.

If you read my post, you'd realize that I gave him exactly what he wanted without having to house rule anything more, and getting as close as possible to the same %'s as the standard buy method.

However, if he's willing to do the standard method with no extra work, and not allow the odd base stats, your method works with no house ruling necessary beyond "no odd numbered stats"


Thanks guys, I don't mind if the power level is a bit higher, I'm going for simplicity. like I wish 6 points could mean you get a +1 to all your stats or instead be +3 to str and +3 to con

RPG Superstar Season 9 Top 16

Lastoutkast wrote:
Thanks guys, I don't mind if the power level is a bit higher, I'm going for simplicity. like I wish 6 points could mean you get a +1 to all your stats or instead be +3 to str and +3 to con

The problem with that system is that it punishes players who have more well-rounded characters.

Try this system I designed. The costs are roughly the same as a 20 point buy, but a little more generous for the player and has numbers easier to work with. If you want to give them more generous ability scores, then increase the total points to 12. If you want them to have very heroic scores, then increase the total to 15.

TOTAL POINTS: 10
(Score, Point Cost)
-2 -2
-1 -1
+0 0
+1 1
+2 2
+3 5
+4 8

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