If you have recently purchased UNO Show 'Em No Mercy, you probably noticed immediately that the box is much thicker than a standard UNO game. But exactly how many cards are in UNO No Mercy?

Here is the complete breakdown of the deck size, including all the brutal new action and wild cards that make this version so chaotic.

The Total Deck Size

A standard UNO deck contains 108 cards (or 112 if you count the blank customizable wild cards).

In contrast, UNO No Mercy contains a massive 168 cards!

This is an additional 60 cards compared to the original game. The larger deck size is necessary because of the sheer volume of drawing penalties players are forced to take.

Breakdown of the 168 Cards

So, what exactly is inside this supersized deck? The extra 60 cards are a mix of standard numbers and terrifying new wild and action cards. Here are the most notable additions you will find:

• Wild Draw 6: Forces the next player to draw 6 cards.
• Wild Draw 10: The most feared card in the game. Forces the next player to draw 10 cards!
• Skip Everyone: Allows you to skip all other players at the table and immediately take another turn.
• Wild Reverse Draw 4: Reverses the direction of play and forces the player who went before you to draw 4 cards.
• Wild Color Roulette: The next player must continuously draw from the main deck until they find a card of the color you choose.

Why Are There So Many Cards?

The deck size is increased specifically to support the Mercy Rule. Under the Mercy Rule, if a player ever holds 25 or more cards in their hand, they are eliminated from the game.

Because penalty stacking is an official rule (e.g., placing a Draw 4 on a Draw 2, forcing the next player to draw 6), hands grow incredibly fast. Without 168 cards, the deck would constantly run out and need reshuffling.

Whether you are looking to verify your deck isn't missing cards, or just wondering why the stack is so tall, 168 cards is exactly what you need to show your friends absolutely no mercy!