http://www.umop.com/rps15.htmHow do you play you might ask? It's quite a simple combination of elements:
ROCK POUNDS OUT FIRE, CRUSHES SCISSORS, SNAKE, HUMAN, WOLF, SPONGE, BLOCKS (GROWTH OF) TREE.
GUN TARGETS ROCK & TREE, FIRES, OUTCLASSES SCISSORS, SHOOTS SNAKE, HUMAN & WOLF.
LIGHTNING MELTS GUN & SCISSORS, SPLITS ROCK & TREE, STARTS FIRE, STRIKES SNAKE & HUMAN.
and more!
There's also
RPS-25, which finally contains the official rules for nukes (beats rock and scissors, but not paper) and
RPS-101 which is just absurd.