Touhou Kontonfu is a dueling card game based in the Touhou universe using the ChaOS system. Your Main Deck is built from 50 cards, including characters, events, set cards, and the like. You may have up to 4 copies of cards with the same name. Extra cards can't go in your Main Deck; you may have an Extra Deck with up to 10 cards. If your Extra Deck has under 10 cards (for instance, 0) you can still play the game. In Chaos TCG, your Main Deck is your Life. Each player's goal is to reduce their opponent's Main Deck to 0 through attacks and card effects. ChaOS (Character Operating System) is the second dueling TCG by the makers of the extremely popular Weiß Schwarz. This system focuses more on individual characters and their abilities. Translations of the rules and cards are available from the websites listed below in the links section.