One Card! is a free multiplayer card game developed by V-Play Games. This game was previously called ONU, and it is a fun variation of Crazy Eights, Crazy 8s, Mau Mau, Neunerln or Tschau Sepp. The game is easy to learn and features colorful graphics that make it more engaging.

You can play with other One Card! players from all over the world in multiplayer matches, invite up to three friends for a game, and find out who’s the best. The matchmaking system is clever and ensures you play with players of your skill level, thanks to the ELO rating. You can also practice in single-player mode with challenging computers and level up with the level system. Plus, you can compare your score with players worldwide in this fun and colorful card game.