Raj and Sheldon partake in a series of juvenile tit-for-tat exchanges.
Read MoreRock, Paper, Scissors, Lizard, Spock
Sheldon explains a new versions of Rock, Paper, Scissors to Raj: Rock, Paper, Scissors, Lizard, Spock.
Read More3D Chess: A Sequential Game
Sheldon and Leonard are playing 3D chess which is a sequential game.
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