CGT is a closed economy card game in which players are collectors of valuable cards from famous trading card games. In each game, players will create the "Meta", which will indicate the values of each card. Players will try to control the Meta to make their collection the most valuable.

There are seven different cards in different quantities. At the beginning of the game, each card is given an ability that is used when the card is played or that will change the card's value. The game includes 24 different abilities, which makes the game unique every time you play it.

On a player's turn, they play a card from their hand, increasing its value, carry out the ability of the card, then buy new cards from the market that are collectively valued the same or lower than the new value of the played card.

—description from the designer