The Big Bang Theory is a beloved sitcom that has gained immense popularity over the years. The show features a group of nerdy friends who are passionate about science, comic books, and video games.

In several episodes, we see the gang playing a game that has become quite famous among fans. So, what game are they playing on Big Bang Theory? Let’s find out.

The Game

The game that the gang plays on Big Bang Theory is called “Rock-Paper-Scissors-Lizard-Spock.” As the name suggests, the game is an extension of the classic game “Rock-Paper-Scissors” and includes two additional hand gestures – lizard and Spock.

How to Play

The rules of the game are simple. Each player simultaneously makes one of five hand gestures representing either rock, paper, scissors, lizard or Spock. The winner is determined by the following hierarchy:

The Significance in Pop Culture

“Rock-Paper-Scissors-Lizard-Spock” gained immense popularity after it was introduced in an episode of Big Bang Theory titled “The Lizard-Spock Expansion.” The episode aired in season two and featured Sheldon explaining the rules of this new game to his friends. Since then, the game has become a fan favorite and has been referenced in several other episodes of the show.

The popularity of “Rock-Paper-Scissors-Lizard-Spock” also spilled over into pop culture outside of Big Bang Theory. The game has been featured in other TV shows, movies, and even video games.


In conclusion, “Rock-Paper-Scissors-Lizard-Spock” is a fun and unique twist on the classic game of “Rock-Paper-Scissors.” Its inclusion in Big Bang Theory has made it a fan favorite and a pop culture phenomenon. So, next time you’re with your friends, give this game a try and see who comes out on top!