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Many of us are probably aware of the classic 'Rock-paper-scissors' game. I'm looking for an expansion with as many weapons as possible.

One popular alternative is 'Rock-paper-scissors-lizard-Spock'. Is there any longer expansion available?

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Well, I think your need is probably satisfied by RPS-101: 101 gesture Rock-Paper-Scissors. There are apparently 5,050 possible outcomes to this game, which should keep you entertained for a while...

For something slightly less mindblowingly hardcore, the same author has also developed 7, 9, 11, 15 and 25 gesture variants. These get complicated quickly! As an example, the 15 gesture version looks like this:

enter image description here

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I was going to make up "gun" and "marijuana" because these American Sign Language hand signals are commonly known, and they look different than RPS lizard, and Spock. I working with the relationships between the objects, but since there were 90 ways to graph it it might have taken a while to get the right solution. Glad to see someone already did. – user1873 Mar 3 '13 at 22:11
It's worth noting that the 101 gesture version includes a number of two-handed gestures whereas all the other versions by this author are exclusively one-handed gestures. – Thunderforge Jan 27 '15 at 3:37

To see what beats what in any version draw out just the circle and whatever gets beat by something go 1/2 of the total if the amount is even and 1 more than half if it's odd.

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I don't quite follow this. Are you saying you need to assign a number to each option, and then do some math to that number? Could you add an example, and flesh out your answer a bit so it stands on its own rather than referencing other answers? (Also: welcome to Board & Card Games!) – Paul Marshall Feb 15 '14 at 1:28

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