R ck p per s issors li ard
sp ck

Invite a friend to settle your
petty dispute live over the web

Send this URL to your friend, then wait here for them to show up.

or play a random stranger [beta]


Take your pick


What the Spock is this?

Play rock paper scissors lizard spock with a friend or enemy live over the web to break a tie, resolve a ‘debate’, or kill time before Game of Thrones comes on.


Online dispute resolution used to be tedious, so I made this.

How to play

  1. Send the link above to your frenemy.
  2. Wait here for them to show up.
  3. The game begins automatically when your friend arrives.

I like to dictate the victory conditions in my game invitations. "First to 37 wins gets free drinks all night, suckah!" is sure to leave others marvelling at your deep pockets and generosity of spirit.

Start a new game

Visit the homepage at http://rpsls.net to generate a new link.

Learn to build games like this!

Sign up for sneak peaks and discounts on the upcoming course…

Get a room!

Set up a named room for regular games with your sweetheart or nemesis by using your own hashtag. It saves you having to fling links around all the time. e.g. http://rpsls.net#chewbacca

Play a random weirdo [BETA]

If you're daring or friendless, you can play a total stranger from among the Web's finest by visiting http://rpsls.net?random.

Random players are machine-selected from the FBI's Most Wanted list, your local library, and a Swedish Internet café that smells of sadness and lingonberries.

Other stuff you should know

Rock paper scissors lizard what now?

Lizard spock is a free expansion pack for the much-loved game of rock paper scissors. The additional characters were added by Sam Kass and Karen Bryla before being adopted, reordered, and overpopularised by The Big Bang Theory.

Lizard and Spock reduce the chance of a tie by eating, smashing, poisoning or vaporising their opponents, as is their birthright.

The 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.

Watch the video for additional torment / schooling.


Illustration, design, and code is by Nick Cernis. I'm the developer behind Put Things Off and the writer behind Modern Nerd. I'm currently open to new projects. You can chat on twitter @nickcernis or email nick@cern.is


The game's 100% JavaScript, backed by Firebase. It's served by nginx and hosted on a VPS from Digital Ocean. Titles are set in JAF Domus Titling Web and body copy is set in Facit Web. Animations are powered by the GreenSock Animation Platform.

Opponent offline