Fortunately, I happen to live in a place where radon is stable, and is cold enough for it to be a solid.
I spilled nuclear fallout all over the next user's house.
Fortunately, I have an EMP generator. The EMP shuts down all of the nanobots, rendering them harmless. In addition, I blasted the area with massive amounts of gamma radiation to further destroy them to prevent them from ever being a threat again.
The next user is hit by a large piece of sodium azide, which immediately detonates.
I curse and dive underwater, suffering some wounds and burns, and then I eat some plnt to replenish lost health.
The next user is hit in the head by a huge icicle.
This is an alternate reality. I jet-pack out and begin shooting raptor-lazers at the fighters. They were so impressed they let me go back to Mother Russia.
The next user's ground crubles beneath his feet as he falls straight into HELL. >:D
Fortunately, I have a device that allows me to teleport between universes. I activate it just as the ground disappeared, teleporting me to a new universe that I proceed to design the away I want it. In addition, a black hole was created, destroying Hell completely.
The next user was one of the demons in Hell when the black hole appeared and started destroying everything.
Whoa! he said everything it touched gets turned into nanobots! the whole world would be made out of nanobots, so unless you were on another planet, you never survived.
I fell and landed in a sea of jelly... I float to the surface and realize that I am in utopia. BTW the jelly was not fully made, so it was still a liquid. Also, utopia is technically one of my religions... When I die, I will go there.
The next player dies of old age.