Cardline uses the same excellent game mechanic as the Timeline series of games by Asmodee. Players will challenge themselves and their friends in testing their logic and memory skills while trying to place in order either the size, weight or lifespan of the animals. A single game characteristic is chosen for the game. With each card played the game gains in complexity and is guaranteed to teach something new to all. The winner is determined by the first player to successfully place all of their cards during a round.