You can rate and/or review a game only if you have downloaded and played the game at least once. To submit a rating or review for a game, access the game's description page by selecting the game. To rate a game, click on the heart to like or dislike the game. To review a game, scroll down to the reviews and click on Write Review. After you complete your review click on the + icon on the upper right to submit it. You can read all the reviews and see all the ratings by clicking on More in the review section.