DOS Card Game, 2 Is More Important Than 1, & Number Matching Is King, Just Like Uno, Dos Involves A Race To Be The First To Get Rid Of Your Cards, To Start, There Are 2 Discard Piles Between The Players, Each Player Can Discard On Either Pile With Either 1 Or 2 Cards, So If A Player Has 2 Cards That Add Up To The Number Of A Card In The Center Pile, They Are Able To Put Down Both Cards, When You're Down To 2 Cards, Yell Dos, First Person To 200 Points Wins, Includes A 112 Card Deck Plus Instructions, For 2 To 4 Players, Ages 7 & Older, Colors & Decorations May Vary.