stevekenson: (go-play)
[personal profile] stevekenson
Some superhero settings feature truly cosmic levels of power. While, in my experience, it is most often easier to simply treat such massively powerful beings as plot devices, sometimes it’s fun to consider the limits of the game system in terms of modeling them. Case in point: how many ranks of Damage would you need to destroy the Earth in the third edition of Mutants & Masterminds?
Now, a lot of it depends on how we define “destroy.” For the same of discussion, let’s stipulate the following:

• The Earth is an “object” in game terms (albeit a big one). So it is subject to the rules for damaging objects.

• While made of a variety of materials, we’ll consider the Earth’s base Toughness that of stone: rank 5.

• The “thickness” of the Earth is its diameter: 7,901 miles. That’s technically a distance rank of 20, since it’s shy of the 8,000 miles value of rank 21. Since an object’s Toughness equals its base rank + (distance rank + 7), that would make Earth’s Toughness rank 5 + (20 + 7) or 32.

• Let’s say that the Earth’s Toughness is also Impervious, so nothing less than Damage 17 even has a chance of damaging the planet as a whole. Anything else might mess up the landscape, but that’s all.

So, the minimum Damage rank (17) has a resistance DC of (17 + 15) or 32, the same as the planet’s Toughness value, meaning the resistance check pretty much can’t fail.

But wait: let’s assume the “attacker” is going to take the option of making an attack check, since the Earth is a pretty massive object. It’s not like he’s going to miss! That’s good for a critical hit and +5 Damage. Likewise, let’s assume the attacker goes for a Power Attack for – to the attack check and +2 Damage.

That ramps the Damage up to 24, or DC 39. Now the GM needs to roll a 7 or better for the planet to suffer no serious damage. A 6 or less means a Toughness reduction, while a 2 or less (for a Toughness check total of 34 or less) actually means two degrees of failure: the attack blows a hole clear through the planet! While that doesn’t shatter the Earth in one blow, it probably means the end of life as we know it as the molten core burst out and floods the surface.

(Indeed, if we were being really pedantic about this, we could probably stipulate the Earth’s “thickness” as that of the rocky mantle—mere tens of miles—since any attack that blasts through that will unleash the high-pressure molten magma from the core. But I digress...)

Ramping things up further, a Damage 20 attack, made with a successful attack check, a full Power Attack (+5 Damage), and some extra effort (for +1 Damage) does a whopping Damage 31, DC 46. The planet needs a die roll of 14 or better to avoid damage altogether. A roll of 9 or less means a hole punched right through the planet, while a roll of 4 or less shatters the enter planet in a single blast! So it’s quite possible for some high-level characters to at least threaten Earth-sized planets, to say nothing of smaller moons or the like. Take the Damage rank up by even 5– and the attacker has even odds of smashing planets with single attacks!
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stevekenson

July 2011

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