R.P.S.L.S

Rock.Paper.Scissors.Lizard.Spock

Its very simple...

Image to show all variations of the game and which hand wins

Rules

Scissors cuts Paper Paper covers Rock Rock crushes Lizard Lizard poisons Spock Spock smashes Scissors
Scissors decapitates Lizard Lizard eats Paper Paper disproves Spock Spock vaporizes Rock Rock crushes Scissors