Yes. You can throw out and redraw any number of cards, from zero to your whole hand.
In Uno, you can stack Draw 2 cards on top of each other, but you cannot stack Draw 4 cards. This means if a player plays a Draw 2 card, the next player can play another Draw 2 card to make the following player draw 4 cards. However, if a player plays a Draw 4 card, the next player cannot stack another Draw 4 card on top of it.
In Uno, when a player plays a Wild Card Draw 4, the next player must draw 4 cards from the deck. The player who played the Wild Card Draw 4 gets to choose the color that play continues with.
In Uno, when a Draw 4 card is played, the next player must draw 4 cards and forfeit their turn. The player who played the Draw 4 card gets to choose the color that play continues with.
No, if a draw 4 is placed, the player MUST draw 4, there is no way out of it. However if the player who placed the draw 4 has a card that is the current colour, you can challenge them, they then have to show there cards, if they do then they must draw 2, but if you are wrong you must draw 2 extra cards.
To stack cards in Uno, you can play a Draw 2 or Draw 4 card on top of another Draw 2 or Draw 4 card of a different color. This forces the next player to draw the total number of cards indicated on the stacked cards.
In Uno Flip, the dark side cards have special meanings. The Draw 1 card makes the next player draw one card, the Draw 2 card makes the next player draw two cards, the Skip card skips the next player's turn, the Wild card allows the player to choose the color, and the Wild Draw 4 card makes the next player draw four cards and allows the player to choose the color.
When a player plays a Uno Reverse card after being hit with a Draw 4 card, the action is reversed back to the previous player who played the Draw 4 card, and that player must draw four cards instead.
In Uno, the Draw 4 card allows the player to choose a color and forces the next player to draw four cards. The player who plays the Draw 4 card must also skip their turn.
When a player is forced to draw 4 cards in Uno Stack, they must pick up 4 additional cards from the draw pile and add them to their hand. This penalty is usually incurred when a player cannot play a card from their hand that matches the top card on the discard pile.
No, you cannot stack 4 cards in Uno to make another player draw even more cards. Only one 4 card can be played at a time, and the next player must draw four cards and forfeit their turn.
When the Draw 2 card is played, the next player only draws two cards; his turn is forfeited. The next player after the one who drew may play the Wild Draw 4 and declare the color, but only if he does not have a card of the same color as the Draw 2. If the next player, the potential victim of the Wild Draw 4, doesn't believe that he didn't have a card of the same color as the Draw 2, that player may challenge. At that point the one who played the Draw 4 must show his cards. If the challenger was right, the one who played the Draw 4 picks it up, plays a legal card, and draws four cards. If the challenger was wrong, he must draw two extra cards in addition to the four.
In Uno, you can stack Draw 2 and Draw 4 cards on top of each other. If a player receives multiple Draw 2 or Draw 4 cards in a row, they can stack them and the next player must draw the total number of cards indicated.