This weekend is the 50th anniversary of Doctor Who's first appearance on the small screen, and Google has chosen to celebrate it with a wonderful multi-level platform game.

Choosing to play as any of the 11 Doctors, you can roam around space (and, um, time?) dodging Daleks and completing small puzzles. It's wonderful, juvenile fun, and it's Friday, so you're allowed.

Note that, at the time of writing, the doodle isn't actually live in the US—but it is in Australia. Which kind of makes you a time traveller, right? [Google]