11 Made-Up Games From The Big Bang Theory And How To (Sorta) Play Them (Article from the site  www.cbs.com)

1. Fight, Friend, Eat

For the The Big Bang Theory gang, their genius brains aren't stimulated by the average board or card games. That's why, over the years Raj, Howard, Leonard, and, of course, Sheldon have stepped up to create a unique archive of activities that test their own knowledge andprovide endless hours of fun. 

The latest game was revealed on the episode entitled "The Platonic Permutation" when Sheldon introduced "Food, Friend, Fight," which is where one player names three aquatic creatures and the other must identify which he or she would eat, befriend, or battle.  

In honor of this newly-minted romp, we decided to round up 10 other concocted amusements courtesy of The Big Bang Theory and explain how to play them at home!  

The Big Bang Theory - Food, Friend, Fight on youtube:

https://www.youtube.com/watch?v=Kz5Ulwqu5d4

 Awesome!

2. Three Person Chess

Although three-person chess exists, Sheldon upped the ante by adding new place pieces as we saw in "The Wildebeest Implementation" (Season 4, Episode 22). 

https://www.youtube.com/watch?v=80EHWa6LSq8&list=RDVVdGWZT7F9M&index=2

How To Play:
The complex game uses a three-sided board that includes a central combat area with similar checkmate rules for capture, move order, and game objective. The game has been played a few times on the show, each instance revealing new pawns and rules that Sheldon has added like:

The Serpent: It slithers to—and poisons—an opposing player's piece, meaning it will die after two moves. But, if it can make it to the old woman, who can suck out the poison in those moves, then the piece becomes the Grand Empress, which combines the power of the knight, queen, and serpent.

Prince Joey: As the king's simple-minded cousin, there's a 1-in-5 chance he'll kill himself—though, it's unknown if this piece was implemented or if he killed himself.

Flinging pieces: Sheldon introduced the flying bishop by using a catapult.

Queen's Gorilla Two: It's not exactly clear how to use this piece, but Sheldon plays it during one turn.

Spinning Wheel: The new location of the piece is decided by spinning a wheel with place locations on it. 

Golf Cart: Even Leonard is confused by the game and asked when he could use this piece, to which Sheldon responds, "When it's done charging." But, when a piece lands on the time machine, the golf cart can be used without waiting for it to charge. 

Pope: When this piece is captured, you can release a swarm, which can cause checkmate. The Pope is also able to have a jet pack. 

Beekeeper: This pawn was moved by Leonard to King 12, allowing him to capture the Pope, release the swamp, and checkmate Sheldon. 

3. Counter-factuals

The rules of this game are fairly simple, according to Sheldon and Amy, who explained them on "The Zazzy Substitution" (Season 4, Episode 3). 

How To Play:
You "postulate an alternate world that differs from ours in one key aspect, and then pose questions to each other." Then, you answer that question as if you were in that alternate scenario.

The Big Bang Theory - Sheldon & Amy's Game Counter-Factuals on youtube:

https://www.youtube.com/watch?v=0lpY0Kt4bn8

4. Secret Agent Obstacle Chess

Leonard, Howard, and Raj first play this game in "The Work Song Nanocluster" (Season 2, Episode 18).

How To Play:
While the basics of chess seem to remain the same, prior to a player making a move, they must navigate through a series of laser beams that are only visible when sprayed with a mist.

The Big Bang Theory - Secret agent laser obstacle chess on youtube:

https://www.youtube.com/watch?v=IEpi9qAfRaE