While popularized by the show, the game was actually invented by software engineer Sam Kass in 1998. The Rules: Sheldon explains the logic at high speed: 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 . (And as it always has) Rock crushes Scissors .
Howard attempts to "pick up" (Sara Rue) by letting her drive the Mars Rover from a secure university lab.
To resolve a dispute with Raj over what to watch on TV, Sheldon introduces an "expansion pack" to the traditional game to reduce stalemates.
The "expansion" fails because Sheldon, Raj, and Howard all choose "Spock" every single time, leading to the same stalemates Sheldon tried to avoid. 2. Main Plot: The Mars Rover Incident