Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
I should have read the reviews on the US Amazon website. This game will NOT work on your Amazon fire stick. It takes ages to download and then crashes before it's compete. Looks like the game is too big for the fire stick