Cheiromancer said:
The reason I ask is that the two systems diverge sharply when party size is not equal to 4. In Grim Tales doubling the size of the party does not change the total amount of xp awarded; in the IH appendix it will halve the total xp awarded. This is true both in version 4 and version 5 of the IH appendices.
Bear with me. I'm hopped up on painkillers after a rough day at the dentist...
The XP in Grim Tales is based on the difficulty of the encounter. If you double the party size-- or indeed if you do anything to the party including adding a bit of CR here and there or a henchman, familiar, companion, etc.-- the overall difficulty of the encounter will go down, and XP will be reduced accordingly.
The real advantage to the GT system (over the SRD) is its ability to track for subtle increases in Party CR/EL that make encounters too easy, and to keep XP in line.
In the GT system doubling the party size increases the EL of the party by +4 for the increase in CR (table 14-1), decreases it by -2 for the increase in numbers (table 14-2), and so makes the EL difference change by -2. According to table 14-4 that will halve the individual experience point award. But since there are twice as many individuals, the total xp awarded has not changed.
I can answer this the quick way or the in-depth way. The quick way is simple: Simply changing the party size
shouldn't change the XP award for a given encounter. (Notice I said
size, and not
composition. We'll get to that...)
Now the in-depth explanation, an example using real numbers.
CASE ONE
Party of four 4th level characters. Total CR = 16, EL = 13.
The encounter (we don't care what it is composed of) is Moderate (EL 9).
The XP award for a Moderate encounter is 75 XP per character level. Each character earns 300 XP (75 x 4th).
The total XP awarded across the party is 1200 XP.
You'll also note that it will require 13 1/3 of these encounters for each character to level up.
CASE TWO
Party of eight 4th level characters. Total CR = 32, EL = 15. (We could have answered this intuitively with the knowledge that doubling the number of opponents increases EL by +2).
The same encounter, of course, EL 9. Except that now it's no longer Moderate, it's Easy. (EL 15 vs. EL 9)
The XP award for this is 37.5 XP per character level. Each character earns 150 XP, and the total amount of XP awarded across the party is 1200 XP.
Now let me try to anticipate what may be giving you some concerns. Notice that in the two cases above, the encounter has the same relative threat to each individual character-- you're doubling the number of characters, but as far as any given party member is concerned, this encounter is equally difficult.
But let's look at another case: tougher characters.
CASE THREE
Four 8th level characters.
Total CR = 32, EL = 17.
Now the same encounter has gone from Moderate (Case 1) to Easy (Case 2) to Very Easy (Case 3).
A Very Easy encounter is worth 18.75 XP per character level. Now, each character receives 150 XP. The total XP awarded across the party is only 600 XP.
---
In every case (1-2-3) you should find these awards in line with the XP table in the DMG.
I certainly hope that answers your question. Other than, "When's my next Percocet?" that's the most thinking I've done all day...
Wulf