For a lazy Sunday - Here is a wonderful game based on physics:
To quote the designer of the game:
"Swinging titles are a common theme in physics games, for whatever reason. Personally, I think the attraction is two-fold. One: Actually swinging around on stuff—in real life—is a lot of fun. But, it’s damn hard. While your imagination may have you gliding from object to object with the greatest of ease, in practice it’s slow, clunky, and rather inelegant (plus, it requires a fair bit of strength, and sitting around on computers all day isn’t exactly building up that requirement). Two: There’s a primal attraction to the activity. I was watching an episode of the excellent Planet Earth with some great chimpanzee and monkey footage. I really did have the urge to spend the rest of the day in the jungle canopy, swinging carelessly from one branch to the next." (emphasis mine)
Enjoy swinging from one branch to the next. I'll be interested in just how far you make it ....