From the publisher's website:
The rules of Red are simple: Highest card wins! But Red is only one of seven games you'll be playing. Red7 is a quick and easy to learn card game that you can teach and play in five minutes. Red7 uses a deck of 49 cards, numbered 1-7 in suits of the seven rainbow colors. To begin a round, each player will receive a seven card hand, and one card face up in front of them. The face up cards begin each player's palette. The top card of the rules canvas(the discard pile) determines what the current rule is. The last player standing wins the round. If you're not winning the current game at the end of your turn, you're out!