Knock, knock! Mr. Grumpy McGrump is not the happiest, but he is definitely the most hilarious marmot in the neighborhood. Knock the door, tap the windows and ring the bell to check the funniest reactions from Mr. McGrump. Just don’t get caught!Play tricks to see dozens of reactions from Mr. McGrump! Kids love it!COLLECTIBLE SOUVENIRSCollect surprise souvenirs from Mr. McGrump! Each tap adds a little to the Annoy-o-Meter and every time you reach the top you get a souvenir to keep forever! Can you get them all?NEW DOOR BELLSEach tap also gives you coins that you can use to get new fun door bells sounds and colors. Try all of them!HIGHLIGHTS. Dozens of funny tricks and reactions. Collectible souvenirs. Different doorbells. Fun and cute illustrations. Cats and dogs are over. Marmots are awesome!!Please note! This game is free to play, but it contains items that can be purchased for real money. Some features and extras mentioned in the description may also have to be purchased for real money.