#RPGaDay2015 Day 25: Favorite Revolutionary Game Mechanic

Maybe I'm simple, but I am quite fond of the formula for melee damage in the DWAITAS/Vortex system.

The system system in general is 2d6 + Attribute + Skill (+ Trait) vs target number. Damage is portrayed with three values, each representing the degrees of success in the roll (for example, a crossbow does 4 - [2/4/6] and a punch does Strength damage, naturally). But, here's the clever formula for melee combat:

A successful melee attack with a weapon does Strength damage, but then you check these questions, add +2 for every Yes...

• Is it sharp? Like blades for slashing or puncturing.
• Is it heavy? Like would the character need two hands to use it.
• Is it dangerous? Could it hurt the character on it's own or if they lost control of it, like a whip or a chainsaw.

Simple and brilliant!