Sawbuck Gamer is our daily review of a free or cheap ($10 or less) game.

Temple Run 2
Creator: Imangi Studios
Platforms: iPhone/iPad (Universal), Android
Reviewed on: iPhone
Price: Free

Physical fitness is important. Just ask Olivia Newton John—or Guy Dangerous, the perpetually running protagonist of Temple Run 2. Like the original Temple Run, it’s your job to help Guy snag a golden idol and then escape from an irate demon monkey who wants nothing more than to turn you into its own personal hand puppet. To make the long-distance dash to freedom, you jump, slide, and turn to avoid obstacles both banal, like a stray tree root, and epic, like a freefall into the sky.

It’s a simple formula but one that still holds up, challenging you to beat your distance and time scores. With each death, you’ll start back at the beginning—unless, of course, you’re willing to shell out some real-world bucks to purchase gems. The gems let you continue your run and help put the designers’ kids through college.

Temple 2 doesn’t seek to reinvent the wheel, and aside from some slick new visuals, it’s really just more addictive on-rails running, offering couch-potato players the chance to work on their cardio via proxy.