Actually four games in one, Jolly Roger is part of the Child's Play card game series.
Cards show various pirate themed pictures on the back sides and jolly roger flags featuring math problems on the other. Families can enjoy snap style games, where players take turns playing cards one at a time until the last two cards match (or any in the pile) depending on which side you choose to play with. In the snap game modes, the player who collects the most cards wins.
Jolly Roger Arithmetic also features the new Jolly Roger game where players take turns playing cards one at a time trying to be the last pirate with cards but a ransom card valued 1 - 4 causes the next player to lose 1 - 4 extra cards unless they can pass along another ransom (which can be played by either side). In the Jolly Roger plunder modes, the last player to still hold any cards wins.
--user summary