The best free pet simulator game of all time is now available for you to download! You can adopt Mr. Grumpy, the world's most famous grumpy marmot, and make him your own virtual pet. With this app, you can give Mr. Grumpy a happy home and keep him clean and well-fed. Maybe he'll even grow to hate you a little less! You can play mini-games with Mr. Grumpy all day long. You'll have a lot of fun!

You can customize Mr. Grumpy with funny hats, glasses, and even clothes! He absolutely loves to be dressed in cute little puppy games outfits, he just has a very different way of showing it!

You can decorate his home with all kinds of fun games items and furniture. He absolutely loves to play in his new virtual pet home and have fun with you.