Triangle UNO is a played just like regular UNO only with a twist! Players can play cards that have a picture of the same type of triangle, the name of the triangle, or a description of the triangle. For example, the card may be the word SCALENE in red. Players have the option to either lay down another card that says "Scalene", a picture of a scalene triangle, or the description "all 3 sides different lengths", or to play any other red card. There are of course wilds (based on color and type of triangle), skips, reverse, and draw two cards.