Project Nemesis is a fan driven website for games that use the One-Roll Engine (like Nemesis, Wild Talents, Reign and Monsters) or Chaosium's Basic Roleplay System (BRP) (like Call of Cthulhu) and the Delta Green setting.
I've screwed around with treating mobs of mooks as a circumstance.
You see panels in the comics where the heroes are fighting their way
through a legion of mole-men or robots, smashing, and hewing, but what
they're really trying to do is reach The Slayer of Time before he can
activate his Anti-Chronometer and destroy history.
I have been doing some thinking lately on the powers and miracles, and
I think that there is an aspect concerning how a power is used that
does not seem to have been satisfactorily covered. I looked around and
didn't see anything that covered or discussed this per se before, but I
could be wrong. My idea is for a flaw that defines when a power
doesn't work aside from those already defined by the power. Allow me
to explain what separates this flaw from similar ones and how it can be
used.
One fairly simple modification that I found to be quite useful is generalizing the
dice-adding effects of the Control or Create powers to any power with
'Useful'. If you can come up with a creative way for your power to help
you, roll it, and you can add up to Width in dice to another roll if
you pay 1 Willpower per die added.
With this extra a power has no Willpower cost at
all. If it ordinarily requires you to bid a point of Willpower for
activation (such as Block or Harm), you do not lose Willpower if you
fail to activate it. If the power ordinarily costs Willpower to use it
at all (such as Cosmic Power, Regeneration or Size Shift), you do not
have to spend any Willpower to activate it.
The Gate Maker can open portals between two points. The general form is
a swirly vortex-like wormhole, like from Stargate or Sliders. The
appearance is up to the player though, and specialized forms might
warrant extras or flaws, such as If/Then for requiring a literal door
that must be opened before stepping through. Anyone and anything may
pass through the portal as if it were a tunnel between two rooms.