The world’s No. 1 card game* just got flipped. Mattel Games introduces UNO Flip!, the most competitive version of UNO ever released. Following the classic UNO game’s premise of matching numbers and colors, UNO Flip includes double-sided cards that, when prompted by a “Flip” card, will change the entire game. The double-sided deck features light and dark sides, with light sides playing like classic UNO and dark sides featuring new penalties.

“We like to say that UNO Flip! is our most competitive deck ever as it literally flips the game with two sides and more extreme cards — not only a first for the brand, but also sure to shake up family game night,” says Ray Adler, senior director of global games at Mattel.

UNO Flip! is shipping to retail now.

*The NPD Group