House rules are fan created additions and replacements to core rules in a rules set. In most cases, they are not officially sanctioned by the designer, in contrast to optional rules.

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Any Non-Unit-Payroll Based Merc Contract Mechanism?

FM: Mercs and its predecessors lays out a fine little minigame mechanic for mercenary contract negotiations. I like the bargaining point system, as a concept. Given the level of standardization in ...
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11answers
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3d6 vs a d20: What is the effect of a different probability curve?

What is the effect on game play of replacing d20 rolls with 3d6 rolls in a D&D 4e campaign? I started thinking about this after reading this question where the example was given of playing a d20 ...
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390 views

Will a house-rule for trained skills work?

I've been using a house rule for a while now. If you have a trained skill, and you are making a knowledge check it's free. For example, if you are trained in nature, and fighting natural beasts; you ...