Qwixx is a quick-playing dice game in which everyone participates, no matter whose turn it is. Each player has a scoresheet with the numbers 2-12 in rows of red and yellow and the numbers 12-2 in rows of green and blue.
Math Fluxx is all about the numbers. Players use positive integers (whole numbers) in their quest to achieve a very mathematical goal — but it's not just putting 4 and 2 together to achieve the 42 goal (for example) as Math Fluxx also features the Plan B Meta Rule.