Ticking is what clocks tend to do. Even Eternity Clocks.

Doctor Who: The Eternity Clock will feature time-based gameplay, with players' actions in one time period affecting the future in ways that will doubtless be difficult to foresee. That's the fun of time travel!

The Eternity Clock comes out May 23 for PS3 and in mid-June for PS Vita.

Check out the game's first dev diary from Supermassive games and let us know what you think in the comments or on Twitter.