No, you cannot stack a Wild card on top of another Wild card in Uno.
No, you cannot stack a Skip card on top of another Skip card in Uno.
No, you cannot place a Wild card on top of another Wild card in Uno.
No, in Uno, you cannot play a Wild card on top of another Wild card.
In Uno, you cannot put a Wild Card on top of another Wild Card.
No, you cannot play a Wild Card on another Wild Card in Uno.
In Uno, you cannot stack a Wild card on top of another Wild card. When you play a Wild card, you simply declare the color to continue the game, and the next player must follow that color or play another Wild or matching card. Stacking Wild cards is not part of the standard rules.
No, you cannot stack a 2 card on top of a 4 card in the game of Uno.
No, you do not have to play a wild card if you have it in Uno.
No, you cannot stack a Draw 2 card on top of a Draw 4 card in Uno.
No, you cannot stack a Draw 4 card on top of a Draw 2 card in Uno.
No, you cannot go out on a wild card in Uno.
Yes, you can win in Uno with a wild card.