Watten Champion is a card game app developed by frapfe, available on Android platform, and falls under the Games category with a subcategory of Card. The game is played with one human player and three simulated players. What sets Watten Champion apart from other Watten apps is its Premium version, which supports indicating specific cards (called "Andeuten" or signs) to your partner. However, opponents can also notice these signs.

The game is fast-paced and unpredictable, with many decisions made through dice rolls with situational probabilities. This applies to card selection, shuffling, indicating cards, and noticing indicated cards. The app even tries to bluff the player. If the player bluffs frequently, the app will stay more often than if the player only shuffles in safe situations. Conversely, the app will shuffle more often if the player almost always goes.