Doctor Who: Worlds in Time is a browser-based online game set in the universe of Doctor Who. Players are time travellers helping the Doctor solve a mystery that threatens the very fabric of the time stream. At launch, the game will include monsters from both the original and new series of the show, as well as host worlds (and other locations!) familiar to fans.
Sound good? How fortuitous that there's a preview available now.
[Source: The Mary Sue]