Steve Jackson Games Forums - View Single Post - [Powers] Are Multiplicative Modifiers Fairer?

CarrionPeacock · 08-23-2019, 09:29 AM

At first glance they seem to be:
Create Fire (Destruction,+100%;PM,-10%)
Default: 10*(1+(1-.1))=19/level
Multiplicative: 10*(1+(1))*(1+(-.9))=18/level

But some powers can become too cheap:
Control Rain (Natural Phenomena,+100%; Immediate Preparation Required (10 minutes),-45%; Requires Magic Words,-10%; Requires Gestures,-10%; Costs Fatigue (1 FP),-5%; PM,-10%)
Default: 15*(1+(1-.45-.1-.1-.05-.1))=18/level
Multiplicative: 15*(1+(1))*(1+(-.45-.1-.1-.05-.1))=6/level

Are cases like the second example still fair and balanced? I'm afraid breaking the system by using it.

08-23-2019, 09:29 AM	#1
CarrionPeacock Join Date: May 2018	[Powers] Are Multiplicative Modifiers Fairer? At first glance they seem to be: Create Fire (Destruction,+100%;PM,-10%) Default: 10(1+(1-.1))=19/level Multiplicative: 10(1+(1))(1+(-.9))=18/level But some powers can become too cheap: Control Rain (Natural Phenomena,+100%; Immediate Preparation Required (10 minutes),-45%; Requires Magic Words,-10%; Requires Gestures,-10%; Costs Fatigue (1 FP),-5%; PM,-10%) Default: 15(1+(1-.45-.1-.1-.05-.1))=18/level Multiplicative: 15(1+(1))(1+(-.45-.1-.1-.05-.1))=6/level Are cases like the second example still fair and balanced? I'm afraid breaking the system by using it.