カードゲームXENON, also known as XENON, is a free Android game developed by branche. It falls under the category of card games and offers six subcategories to choose from. The game is played with a deck of cards, consisting of 1 to 10 ranks, and each player draws a card from the deck in turn, choosing one card to use from their hand. The game continues until there are no more cards in the deck, and the player with the highest rank card in the deck wins.

The game offers six subcategories, including Basic, Double, Two-card, Two-on-two, Two Card of Double, and Two-on-two of Double. Each subcategory has its own set of rules and number of players. Additionally, the game has ten heroes, each with their own unique abilities, such as Hidden, Reincarnation, and Destruction. The game also has a time limit of 20 seconds per turn in online battles, which can be extended up to two times in a single game.

Overall, XENON is an enjoyable card game with multiple subcategories and unique hero abilities. It provides an entertaining experience for those who love card games and is a great way to pass the time.