No, you cannot put a Skip card on top of a Draw 4 card in Uno.
No, you cannot put a Skip card on top of a Draw 2 card in Uno.
No, you cannot put a skip card on top of another skip card in Uno.
No, you cannot put a Draw 4 card on top of a Draw 2 card in Uno.
No, you cannot put a Draw 2 card on top of a Draw 4 card in Uno.
No, you cannot put a Draw 4 card on top of a Draw 2 card in Uno.
No, you cannot put a wild card on a Draw 4 card in Uno.
No, you cannot put a reverse on a Draw 2 card in Uno.
No, you cannot put a wild card on a Draw 2 in the game of Uno.
You put down one card each turn, unless told to draw a card or are skipped.
In the game of Uno, you cannot play a Draw 2 card on a number 2 card. Draw 2 cards can only be played on matching colors or on top of another Draw 2 card. If you play a Draw 2 card, the next player must draw two cards and forfeit their turn.
In Uno, you cannot put a Wild Card on top of another Wild Card.
No, you cannot put a black card on top of another black card in Uno.