This is such a fun center game when working on r-controlled vowels! It is based on Uno or Crazy 8's.
I printed all 50 words (10 of each type of r-controlled vowel) then 10 change cards on avery shipping labels and then stuck them on index cards in order to play but you could always cut them out on cardstock or even regular paper. Laminating is a great option too!
Directions are included!