This is the Oldest Game. The rules are simple. One person will says they are something. A force, a thing, and idea, whatever.For example:
"I am the spark that starts a mighty fire."
Someone then will come up with a way to counter that thing. For Example:
"I am the cold water from the bucket that puts the fire out."
Or:
"I am the mighty foot that stops the spark before it causes the fire."
Each idea builds off the last one. So next might be:
"I am the burning lava that turns the water to steam."
And so on and so forth.
I'll Start:
"I am the mighty glacier moving unopposed through the sea."

I am the hole in the ozone layer that causes the glacier to melt

I am the scientific breakthrough that can fix the holes in the ozone layer.

I'm the alien attack that destroys the ozone layer completely

I'm the defense initiative created by Reagan that wipes out the alien attack before it destroys too much of the ozone layer.

I am the lack of funding that stops that defense initiative

I am the unexpected rich man that will donate money to fund the defense initiative.

I am the crash in the stock market that leaves the rich man broke.

I am the government that gives them bailout plans.

edited, refer below.

(Thin ice, guys. Those posts were innocent but if this gets too political I may have to close this thread.)

Sorry, forgot about that I'll revise mine instead.

I am the computer glitch that reverses every stock market trend.

I'm the programmer who fixes the glitch

I'm the bacteria that makes programmer sick

I'm the chemist that made an antibiotic that kills the bacteria.

i am the virus that kill the scientist that make's the cure.

(The oldest game tends to escalate quickly)

I am the brave admirer who continues the scientist's work.

I am the scientist's paranoia, which lead to the scientist writing all of his notes with an advanced cipher to which only he knew the key.

I am the clever guy who shows up out of nowhere, says the cipher is dumb and cracks it.

I am the enigma machine the guy relies on to crack the key.

I am the power surge which breaks down all electronics used for deciphering.

I am the fuse which self-sacrifices to block the power surge.

I'm the electrician who improperly installed the fuse

I am the random psychopath who puts you in a van for three days.

I'm the psychiatrist who locks you in a padded cell.

I am the mouse who ate through the padded cell.

I am the array of mousetraps that is configured to say "LOL UR DEAD"

I am the spring which powers the mousetrap.

I'm the carrot the clever mice use to disable the mouse trap.

I'm the seed which grew into the carrot which the clever mice used to disable the moustrap which was configured into an array which said "LOL UR DEAD" in order to catch the mice which chewed through the padded cell which held the psychopath who was locked up by the psychiatrist and who put in the van the electrician who improperly installed the fuse which blew during the power surge which destroyed the enigma machine which was used by a clever guy to crack the key which was created to hide from the brave admirer the works of the paranoid scientist who was killed by a virus and who made the antibiotic to kill the bacteria which made ill the programmer who fixed the glitch which reversed every stock market trend that caused the stock market to crash and leave broke the rich man who funded the defense initiative created by Regan to wipe out the alien attack which was destroying the ozone layer which was being repaired by the scientific breakthrough and which was causing the glacier to melt and preventing it from floating through the sea unopposed.

*gasps a huge breath in*.

I am never, ever writing a sentence that long again!

I am the mighty glacier which prevents the seed from germinating.

Here we go again!

I am the hole in the ozone layer which melts the glacier.

I am the giant... something that blocks the hole in the ozone layer.

I am the allergy that makes the giant... something sneeze and drop out of the ozone layer.

I am the anti-histamine capsules that the giant had to prevent the allergic reaction

I am the pharmacist who provided the antihistamine capsule.

I'm the boat that sank while carrying antihistamine capsules to the pharmacist

i am the wave that washed the boat ashore.

I am the moon, and can control the waves.

i am the core which keeps the moon in orbit.

I am the sun, whose radiance lights and warms all things. (Including the moon)