The cards of all the players are played following these rules, from the lowest player card to the highest one.

Players can see other penguins' stamp books by clicking on their player cards.

In their player card they can friend the mascot or get an autographed background from them.

They cannot, however, view their stamp book or any of the other things a penguin could normally do from the player card.

The outcome of an at-bat largely depends on the player cards.

Icons are put onto player cards to supplement gameplay.

Some decrease opponent's skills for 1, 2 or 3 periods, like the player cards.

Subscribed members may also make their own player cards and purchase dinosaur-avatars.

Each circular player card has a series of lines and numbers arranged in a circle around its center.

Then the player cards are redistributed for the next turn.