Since Jameson goes outside every day he is usually knackered in the evenings. However I always encourage a playing session in the evening, with either his favorite mouse toy, or piece of string... He also absolutely adores it when I put things under a plastic bag and he'll jump on top of it and try to catch it. We play for about half an hour, and then he is bored and will curl up to sleep.
When I'm outside in the garden though, we can play for hours on end. He prefers playing outdoors and always shows off by jumping up on fences/ shed roof/ trees, and he'll show me his hiding places and adores it when I throw lumps of earth for him to catch.