My favorite game to play with my dog is "Chase". It's exactly what it sounds like: we take turns chasing each other in the back yard, lunging at each other, with me squealing that he's gonna get me/I'm gonna get him. He LOVES it. Grinning, twirling, happy happy HAPPY dog!
What makes this so remarkable is that when we got him about 3 years ago, he was a cowering, flinching, untrusting mess of a canine. He was rescued from a puppy mill where he was physically and mentally abused for several years and was TERRIFIED of people, especially people making fast motions or loud noises. We have worked very hard to teach him how to be a dog and how to enjoy being a dog. So...yeah, that he has come so far that he likes it when I "chase" him? Makes me so extremely proud of him I could burst.