Discard All Card in UNO No Mercy: How It Works, With Examples

The Discard All card in UNO No Mercy lets you throw out every card of its color from your hand in one turn. Play it on a matching color or on another Discard All. If more than one card goes, you pick which lands on top, and that card's effect applies. There are 12 in the deck.

UNO® and UNO Show 'Em No Mercy® are trademarks of Mattel, Inc. This is an independent rules explainer. Open Mercy is our free browser game built on this ruleset, not affiliated with or endorsed by Mattel.
On this page
  1. What the card does and how many are in the deck
  2. When you can play it
  3. What happens next
  4. Edge cases and the mistake people make
  5. A worked example with a real hand
  6. Strategy
  7. Frequently asked questions

What the card does and how many are in the deck

Discard All is a colored action card that clears one color from your hand: every other card of that color you hold goes to the discard pile with it, numbers and action cards alike.

Three in each color, so 12 in the 168-card deck, the same as every other colored action card.

When you can play it

The normal matching rule for a colored action card:

Not on a live draw stack. It has no draw value, so once a Draw 2 or bigger is waiting on you, only a draw card can go down.

What happens next

Which cards leave your hand

Every card of the Discard All's color still in your hand, numbers and action cards both, even a second Discard All. Wild cards stay, since they have no color, and so do the other three colors.

Choosing the top card

One match lands on top automatically. With two or more, a PICK TOP CARD window asks which goes on top, and the next player has to match the card you picked.

What the top card does

It applies its own effect, exactly as if you had just played it from your hand.

Top cardWhat happens
1 to 9Nothing. The turn passes.
0Every hand rotates one seat in the direction of play.
7The swap window opens. Trade hands with anyone, or keep yours.
SkipThe next player loses their turn.
ReverseDirection flips. With two players you play again.
Draw 2 or Draw 4A fresh stack of 2 or 4 against the next player, under the usual stacking rules.
Skip EveryoneEveryone else is skipped. You play again.

Calling your last card

If the dump empties your hand, you win on the spot, with no last-card call, since you never sat on one card. The top card's effect does not fire; the game has ended.

Left with one card? The normal rule applies. Call it, which in Open Mercy is the MERCY! button, or another player can catch you for 10 cards.

Edge cases and the mistake people make

The mistake: topping with a number because it was the first card you tapped. The top card is a free extra effect, so if a Draw 2, Draw 4, Skip or Skip Everyone is in the pile, one of them usually belongs on top.

A worked example with a real hand

Four players: Priya, Marcus, Jo, Sam. The top card is a blue 4. Marcus holds blue 2, blue 9, blue Draw 2, blue Skip Everyone, green 5, yellow Reverse and a blue Discard All.

He plays the Discard All and the four blues go with it. The PICK TOP CARD window opens:

He picks the Draw 2. Seven cards became two, and Jo has a stack to answer. Had he held nothing but the blues, the dump would have won outright, no MERCY! call needed.

Strategy

Frequently asked questions

How does Discard All work in UNO No Mercy?

Play it on the color in play or on another Discard All. Every card of that color in your hand goes to the discard pile with it. If more than one card goes, you choose which lands on top, and that card applies its own effect.

How many Discard All cards are in UNO No Mercy?

Twelve. Three in each of the four colors, the same as Skip, Reverse, Draw 2, Draw 4 and Skip Everyone. That is 12 of the 168 cards in the deck, so one card in fourteen is a Discard All.

Does the top card of a Discard All apply its effect?

Yes. It acts exactly as if you had played it on its own. A Draw 2 starts a 2-card stack, a Skip skips the next player, a Skip Everyone gives you another turn, a 0 rotates hands and a 7 opens the swap window. A plain number does nothing.

Can you win with Discard All?

Yes. If the Discard All and the cards it takes with it are the last cards in your hand, you win on the spot, with no last-card call, because you never sat on one card. The top card's effect does not fire either; the game has ended.

Can you play Discard All on a draw stack?

No. It has no draw value, so it cannot be played while a Draw 2, Draw 4, Draw 6 or Draw 10 is waiting on you. Stack a draw card of your own or take the penalty, and keep the Discard All for later.

What happens if I have no other cards of that color?

It plays like an ordinary card: it goes to the discard pile, the color in play becomes its color, nothing else leaves your hand, and the turn passes. If it was your only card, playing it wins, like any last card.

Read next: Full rules · Every card explained · Stacking rules · How to play

Try the dump in a real game

Collect a color and see how much one card can clear. Free, no download, no login.