There are 3 dice: a color die, a word die, and an action die.
Each die has a background color and some other piece of information.
If the word on the word die and the color on the color die don't match, be the first to throw out a card of the color that is missing (there are only 3 colors total). If they do match perform the action on the action die.
Collect the most points by not being last or freezing up.
There is also a variant that complicates things further.